55992569 has 2 divisors, whose sum is σ = 55992570. Its totient is φ = 55992568.

The previous prime is 55992527. The next prime is 55992583. The reversal of 55992569 is 96529955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46308025 + 9684544 = 6805^2 + 3112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55992569 is a prime.

It is a super-2 number, since 2×55992569² = 6270335566439522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55992269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27996284 + 27996285.

It is an arithmetic number, because the mean of its divisors is an integer number (27996285).

Almost surely, 2^55992569 is an apocalyptic number.

It is an amenable number.

55992569 is a deficient number, since it is larger than the sum of its proper divisors (1).

55992569 is an equidigital number, since it uses as much as digits as its factorization.

55992569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1093500, while the sum is 50.

The square root of 55992569 is about 7482.8182525035. The cubic root of 55992569 is about 382.5693131968.

The spelling of 55992569 in words is "fifty-five million, nine hundred ninety-two thousand, five hundred sixty-nine".