56541000391 has 4 divisors (see below), whose sum is σ = 56541864400. Its totient is φ = 56540136384.

The previous prime is 56541000359. The next prime is 56541000421. The reversal of 56541000391 is 19300014565.

56541000391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56541000391 - 2⁵ = 56541000359 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 (56541000311) 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, 325011 + ... + 467668.

It is an arithmetic number, because the mean of its divisors is an integer number (14135466100).

Almost surely, 2^56541000391 is an apocalyptic number.

56541000391 is the 150388-th centered pentagonal number.

56541000391 is a deficient number, since it is larger than the sum of its proper divisors (864009).

56541000391 is an equidigital number, since it uses as much as digits as its factorization.

56541000391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864008.

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

The spelling of 56541000391 in words is "fifty-six billion, five hundred forty-one million, three hundred ninety-one", and thus it is an aban number.