56032561 has 16 divisors (see below), whose sum is σ = 64810368. Its totient is φ = 47980800.

The previous prime is 56032511. The next prime is 56032573. The reversal of 56032561 is 16523065.

It is not a de Polignac number, because 56032561 - 2¹⁵ = 55999793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56032511) 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, 13906 + ... + 17476.

It is an arithmetic number, because the mean of its divisors is an integer number (4050648).

Almost surely, 2^56032561 is an apocalyptic number.

It is an amenable number.

56032561 is a deficient number, since it is larger than the sum of its proper divisors (8777807).

56032561 is a wasteful number, since it uses less digits than its factorization.

56032561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 56032561 is about 7485.4900307194. The cubic root of 56032561 is about 382.6603733211.

The spelling of 56032561 in words is "fifty-six million, thirty-two thousand, five hundred sixty-one".