55537715 has 8 divisors (see below), whose sum is σ = 66691728. Its totient is φ = 44399200.

The previous prime is 55537679. The next prime is 55537721. The reversal of 55537715 is 51773555.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-55537715 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, 6584 + ... + 12426.

It is an arithmetic number, because the mean of its divisors is an integer number (8336466).

Almost surely, 2^55537715 is an apocalyptic number.

55537715 is a deficient number, since it is larger than the sum of its proper divisors (11154013).

55537715 is a wasteful number, since it uses less digits than its factorization.

55537715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7749.

The product of its digits is 91875, while the sum is 38.

The square root of 55537715 is about 7452.3630480540. The cubic root of 55537715 is about 381.5305651354.

The spelling of 55537715 in words is "fifty-five million, five hundred thirty-seven thousand, seven hundred fifteen".