56397480 has 32 divisors (see below), whose sum is σ = 169192800. Its totient is φ = 15039296.

The previous prime is 56397461. The next prime is 56397487. The reversal of 56397480 is 8479365.

It is a happy number.

56397480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (56397487) 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, 234870 + ... + 235109.

It is an arithmetic number, because the mean of its divisors is an integer number (5287275).

Almost surely, 2^56397480 is an apocalyptic number.

It is an amenable number.

56397480 is an abundant number, since it is smaller than the sum of its proper divisors (112795320).

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

56397480 is a wasteful number, since it uses less digits than its factorization.

56397480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469993 (or 469989 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 56397480 is about 7509.8255638863. The cubic root of 56397480 is about 383.4892841622.

The spelling of 56397480 in words is "fifty-six million, three hundred ninety-seven thousand, four hundred eighty".