55366015 has 4 divisors (see below), whose sum is σ = 66439224. Its totient is φ = 44292808.

The previous prime is 55366009. The next prime is 55366027. The reversal of 55366015 is 51066355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55366015 - 2⁹ = 55365503 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 3 ways as a sum of consecutive naturals, for example, 5536597 + ... + 5536606.

It is an arithmetic number, because the mean of its divisors is an integer number (16609806).

Almost surely, 2^55366015 is an apocalyptic number.

55366015 is a deficient number, since it is larger than the sum of its proper divisors (11073209).

55366015 is a wasteful number, since it uses less digits than its factorization.

55366015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073208.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 55366015 is about 7440.8342946205. The cubic root of 55366015 is about 381.1369802051.

The spelling of 55366015 in words is "fifty-five million, three hundred sixty-six thousand, fifteen".