53520404626557 has 64 divisors (see below), whose sum is σ = 89582197432320. Its totient is φ = 31299334315200.

The previous prime is 53520404626529. The next prime is 53520404626627. The reversal of 53520404626557 is 75562640402535.

53520404626557 is a `hidden beast` number, since 5 + 3 + 5 + 2 + 0 + 4 + 0 + 4 + 626 + 5 + 5 + 7 = 666.

It is not a de Polignac number, because 53520404626557 - 2²² = 53520400432253 is a prime.

It is a super-2 number, since 2×53520404626557² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53520404626457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26009718 + ... + 27991895.

It is an arithmetic number, because the mean of its divisors is an integer number (1399721834880).

Almost surely, 2^{53520404626557} is an apocalyptic number.

It is an amenable number.

53520404626557 is a deficient number, since it is larger than the sum of its proper divisors (36061792805763).

53520404626557 is a wasteful number, since it uses less digits than its factorization.

53520404626557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54001751 (or 54001745 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 54.

The spelling of 53520404626557 in words is "fifty-three trillion, five hundred twenty billion, four hundred four million, six hundred twenty-six thousand, five hundred fifty-seven".