55630569 has 16 divisors (see below), whose sum is σ = 76573440. Its totient is φ = 35906640.

The previous prime is 55630507. The next prime is 55630637. The reversal of 55630569 is 96503655.

It is not a de Polignac number, because 55630569 - 2⁸ = 55630313 is a prime.

It is a super-2 number, since 2×55630569² = 6189520414527522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55630769) 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, 9514 + ... + 14204.

It is an arithmetic number, because the mean of its divisors is an integer number (4785840).

Almost surely, 2^55630569 is an apocalyptic number.

55630569 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

55630569 is a deficient number, since it is larger than the sum of its proper divisors (20942871).

55630569 is a wasteful number, since it uses less digits than its factorization.

55630569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4820.

The product of its (nonzero) digits is 121500, while the sum is 39.

The square root of 55630569 is about 7458.5902823523. The cubic root of 55630569 is about 381.7430748629.

It can be divided in two parts, 556 and 30569, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 55630569 in words is "fifty-five million, six hundred thirty thousand, five hundred sixty-nine".