55955515 has 32 divisors (see below), whose sum is σ = 84602880. Its totient is φ = 34512000.

The previous prime is 55955509. The next prime is 55955533. The reversal of 55955515 is 51555955.

It is not a de Polignac number, because 55955515 - 2⁷ = 55955387 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38166 + ... + 39604.

It is an arithmetic number, because the mean of its divisors is an integer number (2643840).

Almost surely, 2^55955515 is an apocalyptic number.

55955515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55955515 is a deficient number, since it is larger than the sum of its proper divisors (28647365).

55955515 is a wasteful number, since it uses less digits than its factorization.

55955515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563.

The product of its digits is 140625, while the sum is 40.

The square root of 55955515 is about 7480.3419039506. The cubic root of 55955515 is about 382.4849040705.

The spelling of 55955515 in words is "fifty-five million, nine hundred fifty-five thousand, five hundred fifteen".