56945140 has 48 divisors (see below), whose sum is σ = 141087744. Its totient is φ = 18892800.

The previous prime is 56945131. The next prime is 56945143. The reversal of 56945140 is 4154965.

It is a junction number, because it is equal to n+sod(n) for n = 56945096 and 56945105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56945143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2221 + ... + 10900.

It is an arithmetic number, because the mean of its divisors is an integer number (2939328).

Almost surely, 2^56945140 is an apocalyptic number.

It is an amenable number.

56945140 is an abundant number, since it is smaller than the sum of its proper divisors (84142604).

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

56945140 is a wasteful number, since it uses less digits than its factorization.

56945140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13168 (or 13166 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 56945140 is about 7546.2003683973. The cubic root of 56945140 is about 384.7266063778.

The spelling of 56945140 in words is "fifty-six million, nine hundred forty-five thousand, one hundred forty".