55231315 has 16 divisors (see below), whose sum is σ = 67370688. Its totient is φ = 43462656.

The previous prime is 55231301. The next prime is 55231327. The reversal of 55231315 is 51313255.

55231315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55231315 - 2¹⁵ = 55198547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55231315.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 127339 + ... + 127771.

It is an arithmetic number, because the mean of its divisors is an integer number (4210668).

Almost surely, 2^55231315 is an apocalyptic number.

55231315 is a deficient number, since it is larger than the sum of its proper divisors (12139373).

55231315 is a wasteful number, since it uses less digits than its factorization.

55231315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798.

The product of its digits is 2250, while the sum is 25.

The square root of 55231315 is about 7431.7773782589. Note that the first 3 decimals coincide. The cubic root of 55231315 is about 380.8276397674.

The spelling of 55231315 in words is "fifty-five million, two hundred thirty-one thousand, three hundred fifteen".