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53684253 = 32721943149
BaseRepresentation
bin1100110011001…
…0100000011101
310202000102221200
43030302200131
5102220344003
65154350113
71221210600
oct314624035
9122012850
1053684253
1128337857
1215b8b339
13b17833c
1471b6337
154aa66a3
hex333281d

53684253 has 72 divisors (see below), whose sum is σ = 97812000. Its totient is φ = 28195776.

The previous prime is 53684243. The next prime is 53684263. The reversal of 53684253 is 35248635.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53684243) and next prime (53684263).

It is not a de Polignac number, because 53684253 - 28 = 53683997 is a prime.

It is a super-3 number, since 3×536842533 (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53684243) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 360223 + ... + 360371.

It is an arithmetic number, because the mean of its divisors is an integer number (1358500).

Almost surely, 253684253 is an apocalyptic number.

It is an amenable number.

53684253 is a deficient number, since it is larger than the sum of its proper divisors (44127747).

53684253 is a wasteful number, since it uses less digits than its factorization.

53684253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 221 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 53684253 is about 7326.9538691055. The cubic root of 53684253 is about 377.2381775863.

The spelling of 53684253 in words is "fifty-three million, six hundred eighty-four thousand, two hundred fifty-three".

Divisors: 1 3 7 9 19 21 43 49 57 63 129 133 147 149 171 301 387 399 441 447 817 903 931 1043 1197 1341 2107 2451 2709 2793 2831 3129 5719 6321 6407 7301 7353 8379 8493 9387 17157 18963 19221 19817 21903 25479 40033 44849 51471 57663 59451 65709 120099 121733 134547 138719 178353 313943 360297 365199 403641 416157 852131 941829 1095597 1248471 2556393 2825487 5964917 7669179 17894751 53684253