56040405 has 32 divisors (see below), whose sum is σ = 97443840. Its totient is φ = 27397440.

The previous prime is 56040389. The next prime is 56040419. The reversal of 56040405 is 50404065.

It is not a de Polignac number, because 56040405 - 2⁴ = 56040389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5664 + ... + 12006.

It is an arithmetic number, because the mean of its divisors is an integer number (3045120).

Almost surely, 2^56040405 is an apocalyptic number.

It is an amenable number.

56040405 is a deficient number, since it is larger than the sum of its proper divisors (41403435).

56040405 is a wasteful number, since it uses less digits than its factorization.

56040405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 56040405 is about 7486.0139593778. The cubic root of 56040405 is about 382.6782287006.

The spelling of 56040405 in words is "fifty-six million, forty thousand, four hundred five".