56415491 has 16 divisors (see below), whose sum is σ = 63903840. Its totient is φ = 49351680.

The previous prime is 56415461. The next prime is 56415493. The reversal of 56415491 is 19451465.

56415491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56415491 - 2¹⁸ = 56153347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56415493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38765 + ... + 40193.

It is an arithmetic number, because the mean of its divisors is an integer number (3993990).

Almost surely, 2^56415491 is an apocalyptic number.

56415491 is a deficient number, since it is larger than the sum of its proper divisors (7488349).

56415491 is a wasteful number, since it uses less digits than its factorization.

56415491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574.

The product of its digits is 21600, while the sum is 35.

The square root of 56415491 is about 7511.0246305015. The cubic root of 56415491 is about 383.5301033050.

The spelling of 56415491 in words is "fifty-six million, four hundred fifteen thousand, four hundred ninety-one".