5621520931 has 4 divisors (see below), whose sum is σ = 6053945632. Its totient is φ = 5189096232.

The previous prime is 5621520887. The next prime is 5621520943. The reversal of 5621520931 is 1390251265.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5621520931 - 2⁷ = 5621520803 is a prime.

It is a super-2 number, since 2×5621520931² = 63202995155342213522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5621520991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216212331 + ... + 216212356.

It is an arithmetic number, because the mean of its divisors is an integer number (1513486408).

Almost surely, 2^5621520931 is an apocalyptic number.

5621520931 is a deficient number, since it is larger than the sum of its proper divisors (432424701).

5621520931 is a wasteful number, since it uses less digits than its factorization.

5621520931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432424700.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 5621520931 is about 74976.8026192102. The cubic root of 5621520931 is about 1778.0799195233.

The spelling of 5621520931 in words is "five billion, six hundred twenty-one million, five hundred twenty thousand, nine hundred thirty-one".