56961789 has 4 divisors (see below), whose sum is σ = 75949056. Its totient is φ = 37974524.

The previous prime is 56961767. The next prime is 56961797. The reversal of 56961789 is 98716965.

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 not a de Polignac number, because 56961789 - 2⁵ = 56961757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56961889) 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, 9493629 + ... + 9493634.

It is an arithmetic number, because the mean of its divisors is an integer number (18987264).

Almost surely, 2^56961789 is an apocalyptic number.

It is an amenable number.

56961789 is a deficient number, since it is larger than the sum of its proper divisors (18987267).

56961789 is a wasteful number, since it uses less digits than its factorization.

56961789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18987266.

The product of its digits is 816480, while the sum is 51.

The square root of 56961789 is about 7547.3034257276. The cubic root of 56961789 is about 384.7640967830.

The spelling of 56961789 in words is "fifty-six million, nine hundred sixty-one thousand, seven hundred eighty-nine".