56655389 has 4 divisors (see below), whose sum is σ = 64749024. Its totient is φ = 48561756.

The previous prime is 56655367. The next prime is 56655409. The reversal of 56655389 is 98355665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56655389 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 (56675389) 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, 4046807 + ... + 4046820.

It is an arithmetic number, because the mean of its divisors is an integer number (16187256).

Almost surely, 2^56655389 is an apocalyptic number.

It is an amenable number.

56655389 is a deficient number, since it is larger than the sum of its proper divisors (8093635).

56655389 is an equidigital number, since it uses as much as digits as its factorization.

56655389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093634.

The product of its digits is 972000, while the sum is 47.

The square root of 56655389 is about 7526.9774146067. The cubic root of 56655389 is about 384.0729683565.

It can be divided in two parts, 566 and 55389, that added together give a palindrome (55955).

The spelling of 56655389 in words is "fifty-six million, six hundred fifty-five thousand, three hundred eighty-nine".