55111715 has 8 divisors (see below), whose sum is σ = 67040448. Its totient is φ = 43485120.

The previous prime is 55111711. The next prime is 55111717. The reversal of 55111715 is 51711155.

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

It is not a de Polignac number, because 55111715 - 2² = 55111711 is a prime.

It is a super-2 number, since 2×55111715² = 6074602260482450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55111711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75131 + ... + 75860.

It is an arithmetic number, because the mean of its divisors is an integer number (8380056).

Almost surely, 2^55111715 is an apocalyptic number.

55111715 is a deficient number, since it is larger than the sum of its proper divisors (11928733).

55111715 is a wasteful number, since it uses less digits than its factorization.

55111715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151069.

The product of its digits is 875, while the sum is 26.

The square root of 55111715 is about 7423.7264901126. The cubic root of 55111715 is about 380.5525548708.

The spelling of 55111715 in words is "fifty-five million, one hundred eleven thousand, seven hundred fifteen".