56261399 has 4 divisors (see below), whose sum is σ = 56485800. Its totient is φ = 56037000.

The previous prime is 56261393. The next prime is 56261417. The reversal of 56261399 is 99316265.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56261399 - 2²⁰ = 55212823 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 (56261393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111824 + ... + 112325.

It is an arithmetic number, because the mean of its divisors is an integer number (14121450).

Almost surely, 2^56261399 is an apocalyptic number.

56261399 is a deficient number, since it is larger than the sum of its proper divisors (224401).

56261399 is a wasteful number, since it uses less digits than its factorization.

56261399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224400.

The product of its digits is 87480, while the sum is 41.

The square root of 56261399 is about 7500.7598948373. The cubic root of 56261399 is about 383.1805964078.

The spelling of 56261399 in words is "fifty-six million, two hundred sixty-one thousand, three hundred ninety-nine".