55615299 has 24 divisors (see below), whose sum is σ = 79278480. Its totient is φ = 34670592.

The previous prime is 55615291. The next prime is 55615303. The reversal of 55615299 is 99251655.

55615299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55615299 - 2³ = 55615291 is a prime.

It is a super-2 number, since 2×55615299² = 6186122965718802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55615299.

It is not an unprimeable number, because it can be changed into a prime (55615291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96099 + ... + 96675.

It is an arithmetic number, because the mean of its divisors is an integer number (3303270).

Almost surely, 2^55615299 is an apocalyptic number.

55615299 is a deficient number, since it is larger than the sum of its proper divisors (23663181).

55615299 is a wasteful number, since it uses less digits than its factorization.

55615299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 688 counting only the distinct ones).

The product of its digits is 121500, while the sum is 42.

The square root of 55615299 is about 7457.5665602125. The cubic root of 55615299 is about 381.7081435276.

The spelling of 55615299 in words is "fifty-five million, six hundred fifteen thousand, two hundred ninety-nine".