56420456 has 8 divisors (see below), whose sum is σ = 105788370. Its totient is φ = 28210224.

The previous prime is 56420453. The next prime is 56420473. The reversal of 56420456 is 65402465.

56420456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 56100100 + 320356 = 7490^2 + 566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (56420453) 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 as a sum of consecutive naturals, namely, 3526271 + ... + 3526286.

Almost surely, 2^56420456 is an apocalyptic number.

It is an amenable number.

56420456 is a deficient number, since it is larger than the sum of its proper divisors (49367914).

56420456 is a wasteful number, since it uses less digits than its factorization.

56420456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7052563 (or 7052559 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 56420456 is about 7511.3551373903. The cubic root of 56420456 is about 383.5413541811.

Subtracting 56420456 from its reverse (65402465), we obtain a square (8982009 = 2997²).

The spelling of 56420456 in words is "fifty-six million, four hundred twenty thousand, four hundred fifty-six".