5621261610 has 16 divisors (see below), whose sum is σ = 13491027936. Its totient is φ = 1499003088.

The previous prime is 5621261579. The next prime is 5621261623. The reversal of 5621261610 is 161621265.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 187375387 = 5621261610 / (5 + 6 + 2 + 1 + 2 + 6 + 1 + 6 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93687664 + ... + 93687723.

It is an arithmetic number, because the mean of its divisors is an integer number (843189246).

Almost surely, 2^5621261610 is an apocalyptic number.

5621261610 is an abundant number, since it is smaller than the sum of its proper divisors (7869766326).

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

5621261610 is a wasteful number, since it uses less digits than its factorization.

5621261610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187375397.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 5621261610 is about 74975.0732577168. The cubic root of 5621261610 is about 1778.0525781354.

Adding to 5621261610 its reverse (161621265), we get a palindrome (5782882875).

The spelling of 5621261610 in words is "five billion, six hundred twenty-one million, two hundred sixty-one thousand, six hundred ten".