56407457 has 8 divisors (see below), whose sum is σ = 56996352. Its totient is φ = 55822000.

The previous prime is 56407433. The next prime is 56407469. The reversal of 56407457 is 75470465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56407457 - 2¹⁰ = 56406433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56407457.

It is not an unprimeable number, because it can be changed into a prime (56407657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42707 + ... + 44007.

It is an arithmetic number, because the mean of its divisors is an integer number (7124544).

Almost surely, 2^56407457 is an apocalyptic number.

It is an amenable number.

56407457 is a deficient number, since it is larger than the sum of its proper divisors (588895).

56407457 is a wasteful number, since it uses less digits than its factorization.

56407457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 56407457 is about 7510.4897976097. The cubic root of 56407457 is about 383.5118965614.

The spelling of 56407457 in words is "fifty-six million, four hundred seven thousand, four hundred fifty-seven".