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53804218031 = 195477277121
BaseRepresentation
bin110010000110111110…
…110011011010101111
312010212201010110200222
4302012332303122233
51340142334434111
640414535041555
73613214210264
oct620676633257
9163781113628
1053804218031
11209000953a3
12a516b102bb
1350c5c53005
142865a7d26b
1515ed8457db
hexc86fb36af

53804218031 has 16 divisors (see below), whose sum is σ = 56825583360. Its totient is φ = 50802111360.

The previous prime is 53804218009. The next prime is 53804218037. The reversal of 53804218031 is 13081240835.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53804218031 - 222 = 53800023727 is a prime.

It is a super-2 number, since 2×538042180312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53804217982 and 53804218000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53804218037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7552151 + ... + 7559271.

It is an arithmetic number, because the mean of its divisors is an integer number (3551598960).

Almost surely, 253804218031 is an apocalyptic number.

53804218031 is a deficient number, since it is larger than the sum of its proper divisors (3021365329).

53804218031 is a wasteful number, since it uses less digits than its factorization.

53804218031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414.

The product of its (nonzero) digits is 23040, while the sum is 35.

Adding to 53804218031 its reverse (13081240835), we get a palindrome (66885458866).

The spelling of 53804218031 in words is "fifty-three billion, eight hundred four million, two hundred eighteen thousand, thirty-one".

Divisors: 1 19 547 727 7121 10393 13813 135299 397669 3895187 5176967 7555711 74008553 98362373 2831800949 53804218031