55597569 has 16 divisors (see below), whose sum is σ = 77760768. Its totient is φ = 35292672.

The previous prime is 55597567. The next prime is 55597573. The reversal of 55597569 is 96579555.

It is not a de Polignac number, because 55597569 - 2¹ = 55597567 is a prime.

It is a super-2 number, since 2×55597569² = 6182179357419522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55597567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112 + ... + 10545.

It is an arithmetic number, because the mean of its divisors is an integer number (4860048).

Almost surely, 2^55597569 is an apocalyptic number.

It is an amenable number.

55597569 is a deficient number, since it is larger than the sum of its proper divisors (22163199).

55597569 is a wasteful number, since it uses less digits than its factorization.

55597569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10744.

The product of its digits is 2126250, while the sum is 51.

The square root of 55597569 is about 7456.3777398949. The cubic root of 55597569 is about 381.6675767243.

The spelling of 55597569 in words is "fifty-five million, five hundred ninety-seven thousand, five hundred sixty-nine".