56405470 has 32 divisors (see below), whose sum is σ = 111878496. Its totient is φ = 20304000.

The previous prime is 56405467. The next prime is 56405477. The reversal of 56405470 is 7450465.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56405477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8572 + ... + 13648.

It is an arithmetic number, because the mean of its divisors is an integer number (3496203).

Almost surely, 2^56405470 is an apocalyptic number.

56405470 is a deficient number, since it is larger than the sum of its proper divisors (55473026).

56405470 is a wasteful number, since it uses less digits than its factorization.

56405470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 56405470 is about 7510.3575147925. The cubic root of 56405470 is about 383.5073933324.

The spelling of 56405470 in words is "fifty-six million, four hundred five thousand, four hundred seventy".