56569389 has 8 divisors (see below), whose sum is σ = 77859072. Its totient is φ = 36496320.

The previous prime is 56569369. The next prime is 56569417. The reversal of 56569389 is 98396565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-56569389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56569369) 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, 304044 + ... + 304229.

It is an arithmetic number, because the mean of its divisors is an integer number (9732384).

Almost surely, 2^56569389 is an apocalyptic number.

It is an amenable number.

56569389 is a deficient number, since it is larger than the sum of its proper divisors (21289683).

56569389 is a wasteful number, since it uses less digits than its factorization.

56569389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608307.

The product of its digits is 1749600, while the sum is 51.

The square root of 56569389 is about 7521.2624605182. The cubic root of 56569389 is about 383.8785355307.

The spelling of 56569389 in words is "fifty-six million, five hundred sixty-nine thousand, three hundred eighty-nine".