55881499 has 16 divisors (see below), whose sum is σ = 61710336. Its totient is φ = 50371200.

The previous prime is 55881491. The next prime is 55881541. The reversal of 55881499 is 99418855.

It is a cyclic number.

It is not a de Polignac number, because 55881499 - 2³ = 55881491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55881491) 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, 55894 + ... + 56884.

It is an arithmetic number, because the mean of its divisors is an integer number (3856896).

Almost surely, 2^55881499 is an apocalyptic number.

55881499 is a deficient number, since it is larger than the sum of its proper divisors (5828837).

55881499 is a wasteful number, since it uses less digits than its factorization.

55881499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146.

The product of its digits is 518400, while the sum is 49.

The square root of 55881499 is about 7475.3928993732. The cubic root of 55881499 is about 382.3161837675.

The spelling of 55881499 in words is "fifty-five million, eight hundred eighty-one thousand, four hundred ninety-nine".