53557993476 has 405 divisors, whose sum is σ = 162259541829. Its totient is φ = 15396308928.

The previous prime is 53557993399. The next prime is 53557993507. The reversal of 53557993476 is 67439975535.

The square root of 53557993476 is 231426.

It is a perfect power (a square), and thus also a powerful number.

53557993476 is a `hidden beast` number, since 5 + 3 + 5 + 5 + 79 + 93 + 476 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7922780100 + 45635213376 = 89010^2 + 213624^2 .

Its product of digits (107163000) is a multiple of the sum of its prime divisors (84).

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1245534711 + ... + 1245534753.

Almost surely, 2^53557993476 is an apocalyptic number.

53557993476 is the 231426-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53557993476

53557993476 is an abundant number, since it is smaller than the sum of its proper divisors (108701548353).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53557993476 is a wasteful number, since it uses less digits than its factorization.

53557993476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 84 counting only the distinct ones).

The product of its digits is 107163000, while the sum is 63.

The spelling of 53557993476 in words is "fifty-three billion, five hundred fifty-seven million, nine hundred ninety-three thousand, four hundred seventy-six".