56455440 has 40 divisors (see below), whose sum is σ = 175012608. Its totient is φ = 15054720.

The previous prime is 56455423. The next prime is 56455457. The reversal of 56455440 is 4455465.

It is an interprime number because it is at equal distance from previous prime (56455423) and next prime (56455457).

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117376 + ... + 117855.

Almost surely, 2^56455440 is an apocalyptic number.

It is an amenable number.

56455440 is an abundant number, since it is smaller than the sum of its proper divisors (118557168).

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

56455440 is a wasteful number, since it uses less digits than its factorization.

56455440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235247 (or 235241 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 56455440 is about 7513.6835174234. The cubic root of 56455440 is about 383.6206105322.

The spelling of 56455440 in words is "fifty-six million, four hundred fifty-five thousand, four hundred forty".