56409587 has 8 divisors (see below), whose sum is σ = 64322496. Its totient is φ = 49007232.

The previous prime is 56409583. The next prime is 56409599. The reversal of 56409587 is 78590465.

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 56409587 - 2² = 56409583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56409581) 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, 127403 + ... + 127844.

It is an arithmetic number, because the mean of its divisors is an integer number (8040312).

Almost surely, 2^56409587 is an apocalyptic number.

56409587 is a deficient number, since it is larger than the sum of its proper divisors (7912909).

56409587 is a wasteful number, since it uses less digits than its factorization.

56409587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255277.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 56409587 is about 7510.6315979417. The cubic root of 56409587 is about 383.5167237604.

The spelling of 56409587 in words is "fifty-six million, four hundred nine thousand, five hundred eighty-seven".