55998799 has 8 divisors (see below), whose sum is σ = 59594400. Its totient is φ = 52436736.

The previous prime is 55998781. The next prime is 55998809. The reversal of 55998799 is 99789955.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55998799 - 2⁹ = 55998287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55990799) 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, 4894 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (7449300).

Almost surely, 2^55998799 is an apocalyptic number.

55998799 is a deficient number, since it is larger than the sum of its proper divisors (3595601).

55998799 is a wasteful number, since it uses less digits than its factorization.

55998799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16769.

The product of its digits is 9185400, while the sum is 61.

The square root of 55998799 is about 7483.2345279298. The cubic root of 55998799 is about 382.5835014988.

It can be divided in two parts, 55 and 998799, that multiplied together give a palindrome (54933945).

The spelling of 55998799 in words is "fifty-five million, nine hundred ninety-eight thousand, seven hundred ninety-nine".