56450532662521 has 16 divisors (see below), whose sum is σ = 59447731749120. Its totient is φ = 53498609524800.

The previous prime is 56450532662497. The next prime is 56450532662533. The reversal of 56450532662521 is 12526623505465.

It is a cyclic number.

It is not a de Polignac number, because 56450532662521 - 2⁷ = 56450532662393 is a prime.

It is a super-2 number, since 2×56450532662521² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56450532662021) 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, 62989671 + ... + 63879571.

It is an arithmetic number, because the mean of its divisors is an integer number (3715483234320).

Almost surely, 2^{56450532662521} is an apocalyptic number.

It is an amenable number.

56450532662521 is a deficient number, since it is larger than the sum of its proper divisors (2997199086599).

56450532662521 is a wasteful number, since it uses less digits than its factorization.

56450532662521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915336.

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 56450532662521 in words is "fifty-six trillion, four hundred fifty billion, five hundred thirty-two million, six hundred sixty-two thousand, five hundred twenty-one".