56405522 has 16 divisors (see below), whose sum is σ = 91333440. Its totient is φ = 26045712.

The previous prime is 56405521. The next prime is 56405527. The reversal of 56405522 is 22550465.

56405522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (56405521) 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 7 ways as a sum of consecutive naturals, for example, 19808 + ... + 22475.

It is an arithmetic number, because the mean of its divisors is an integer number (5708340).

Almost surely, 2^56405522 is an apocalyptic number.

56405522 is a deficient number, since it is larger than the sum of its proper divisors (34927918).

56405522 is a wasteful number, since it uses less digits than its factorization.

56405522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42337.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 56405522 is about 7510.3609766775. The cubic root of 56405522 is about 383.5075111838.

Adding to 56405522 its reverse (22550465), we get a palindrome (78955987).

The spelling of 56405522 in words is "fifty-six million, four hundred five thousand, five hundred twenty-two".