56561255 has 8 divisors (see below), whose sum is σ = 70824672. Its totient is φ = 43281568.

The previous prime is 56561251. The next prime is 56561273. The reversal of 56561255 is 55216565.

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 56561255 - 2² = 56561251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561251) 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, 245804 + ... + 246033.

It is an arithmetic number, because the mean of its divisors is an integer number (8853084).

Almost surely, 2^56561255 is an apocalyptic number.

56561255 is a deficient number, since it is larger than the sum of its proper divisors (14263417).

56561255 is a wasteful number, since it uses less digits than its factorization.

56561255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491865.

The product of its digits is 45000, while the sum is 35.

The square root of 56561255 is about 7520.7217073895. The cubic root of 56561255 is about 383.8601356049.

The spelling of 56561255 in words is "fifty-six million, five hundred sixty-one thousand, two hundred fifty-five".