56451587 has 8 divisors (see below), whose sum is σ = 57446400. Its totient is φ = 55461384.

The previous prime is 56451569. The next prime is 56451623. The reversal of 56451587 is 78515465.

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 56451587 - 2²⁰ = 55403011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56451517) 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, 31214 + ... + 32972.

It is an arithmetic number, because the mean of its divisors is an integer number (7180800).

Almost surely, 2^56451587 is an apocalyptic number.

56451587 is a deficient number, since it is larger than the sum of its proper divisors (994813).

56451587 is a wasteful number, since it uses less digits than its factorization.

56451587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305.

The product of its digits is 168000, while the sum is 41.

The square root of 56451587 is about 7513.4271141737. The cubic root of 56451587 is about 383.6118831545.

The spelling of 56451587 in words is "fifty-six million, four hundred fifty-one thousand, five hundred eighty-seven".