55113515 has 8 divisors (see below), whose sum is σ = 66182928. Its totient is φ = 44059680.

The previous prime is 55113449. The next prime is 55113523. The reversal of 55113515 is 51531155.

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

It is not a de Polignac number, because 55113515 - 2⁸ = 55113259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6344 + ... + 12266.

It is an arithmetic number, because the mean of its divisors is an integer number (8272866).

Almost surely, 2^55113515 is an apocalyptic number.

55113515 is a deficient number, since it is larger than the sum of its proper divisors (11069413).

55113515 is a wasteful number, since it uses less digits than its factorization.

55113515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7789.

The product of its digits is 1875, while the sum is 26.

The square root of 55113515 is about 7423.8477220374. The cubic root of 55113515 is about 380.5566978928.

The spelling of 55113515 in words is "fifty-five million, one hundred thirteen thousand, five hundred fifteen".