56521000465404 has 48 divisors (see below), whose sum is σ = 133730687043072. Its totient is φ = 18576444292992.

The previous prime is 56521000465313. The next prime is 56521000465453. The reversal of 56521000465404 is 40456400012565.

It is a super-2 number, since 2×56521000465404² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7266244 + ... + 12877899.

It is an arithmetic number, because the mean of its divisors is an integer number (2786055980064).

Almost surely, 2^{56521000465404} is an apocalyptic number.

It is an amenable number.

56521000465404 is an abundant number, since it is smaller than the sum of its proper divisors (77209686577668).

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

56521000465404 is a wasteful number, since it uses less digits than its factorization.

56521000465404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20147426 (or 20147424 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 56521000465404 its reverse (40456400012565), we get a palindrome (96977400477969).

The spelling of 56521000465404 in words is "fifty-six trillion, five hundred twenty-one billion, four hundred sixty-five thousand, four hundred four".