55038515 has 24 divisors (see below), whose sum is σ = 77201712. Its totient is φ = 37558080.

The previous prime is 55038493. The next prime is 55038521. The reversal of 55038515 is 51583055.

It is not a de Polignac number, because 55038515 - 2¹⁰ = 55037491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67460 + ... + 68270.

It is an arithmetic number, because the mean of its divisors is an integer number (3216738).

Almost surely, 2^55038515 is an apocalyptic number.

55038515 is a deficient number, since it is larger than the sum of its proper divisors (22163197).

55038515 is a wasteful number, since it uses less digits than its factorization.

55038515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 55038515 is about 7418.7947134289. The cubic root of 55038515 is about 380.3839954928.

The spelling of 55038515 in words is "fifty-five million, thirty-eight thousand, five hundred fifteen".