56540919 has 8 divisors (see below), whose sum is σ = 75507712. Its totient is φ = 37634040.

The previous prime is 56540879. The next prime is 56540959. The reversal of 56540919 is 91904565.

It is an interprime number because it is at equal distance from previous prime (56540879) and next prime (56540959).

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

It is not a de Polignac number, because 56540919 - 2⁷ = 56540791 is a prime.

It is a super-2 number, since 2×56540919² = 6393751042729122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56540959) 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, 12727 + ... + 16584.

It is an arithmetic number, because the mean of its divisors is an integer number (9438464).

Almost surely, 2^56540919 is an apocalyptic number.

56540919 is a deficient number, since it is larger than the sum of its proper divisors (18966793).

56540919 is a wasteful number, since it uses less digits than its factorization.

56540919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29957.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 56540919 is about 7519.3695879375. The cubic root of 56540919 is about 383.8141258087.

The spelling of 56540919 in words is "fifty-six million, five hundred forty thousand, nine hundred nineteen".