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68757053 = 131524863
BaseRepresentation
bin1000001100100…
…10011000111101
311210101012221112
410012102120331
5120100211203
610453411405
71463265611
oct406223075
9153335845
1068757053
11358a2212
121b039b65
1311324b61
1491bb341
1560826d8
hex419263d

68757053 has 4 divisors (see below), whose sum is σ = 69282048. Its totient is φ = 68232060.

The previous prime is 68757049. The next prime is 68757079. The reversal of 68757053 is 35075786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68757053 - 22 = 68757049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68757053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68757653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262301 + ... + 262562.

It is an arithmetic number, because the mean of its divisors is an integer number (17320512).

Almost surely, 268757053 is an apocalyptic number.

It is an amenable number.

68757053 is a deficient number, since it is larger than the sum of its proper divisors (524995).

68757053 is a wasteful number, since it uses less digits than its factorization.

68757053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524994.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 68757053 is about 8291.9872768836. The cubic root of 68757053 is about 409.6746437253.

The spelling of 68757053 in words is "sixty-eight million, seven hundred fifty-seven thousand, fifty-three".

Divisors: 1 131 524863 68757053