55713215 has 16 divisors (see below), whose sum is σ = 67931136. Its totient is φ = 43860000.

The previous prime is 55713197. The next prime is 55713221. The reversal of 55713215 is 51231755.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-55713215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129050 + ... + 129480.

It is an arithmetic number, because the mean of its divisors is an integer number (4245696).

Almost surely, 2^55713215 is an apocalyptic number.

55713215 is a deficient number, since it is larger than the sum of its proper divisors (12217921).

55713215 is a wasteful number, since it uses less digits than its factorization.

55713215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its digits is 5250, while the sum is 29.

The square root of 55713215 is about 7464.1285492682. The cubic root of 55713215 is about 381.9320233017.

The spelling of 55713215 in words is "fifty-five million, seven hundred thirteen thousand, two hundred fifteen".