56465440 has 24 divisors (see below), whose sum is σ = 133399980. Its totient is φ = 22586112.

The previous prime is 56465429. The next prime is 56465447. The reversal of 56465440 is 4456465.

It can be written as a sum of positive squares in 2 ways, for example, as 54937744 + 1527696 = 7412^2 + 1236^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56465396 and 56465405.

It is not an unprimeable number, because it can be changed into a prime (56465447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176295 + ... + 176614.

Almost surely, 2^56465440 is an apocalyptic number.

It is an amenable number.

56465440 is an abundant number, since it is smaller than the sum of its proper divisors (76934540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56465440 is a wasteful number, since it uses less digits than its factorization.

56465440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352924 (or 352916 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 56465440 is about 7514.3489405271. The cubic root of 56465440 is about 383.6432595431.

The spelling of 56465440 in words is "fifty-six million, four hundred sixty-five thousand, four hundred forty".