56521552351 has 8 divisors (see below), whose sum is σ = 63326358864. Its totient is φ = 49994493120.

The previous prime is 56521552333. The next prime is 56521552357. The reversal of 56521552351 is 15325512565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56521552351 - 2⁵ = 56521552319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521552357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69436390 + ... + 69437203.

It is an arithmetic number, because the mean of its divisors is an integer number (7915794858).

Almost surely, 2^56521552351 is an apocalyptic number.

56521552351 is a deficient number, since it is larger than the sum of its proper divisors (6804806513).

56521552351 is a wasteful number, since it uses less digits than its factorization.

56521552351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138873641.

The product of its digits is 225000, while the sum is 40.

The spelling of 56521552351 in words is "fifty-six billion, five hundred twenty-one million, five hundred fifty-two thousand, three hundred fifty-one".