55036665 has 20 divisors (see below), whose sum is σ = 98659044. Its totient is φ = 29352672.

The previous prime is 55036601. The next prime is 55036679. The reversal of 55036665 is 56663055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 43401744 = 3411^2 + 6588^2 .

It is not a de Polignac number, because 55036665 - 2⁶ = 55036601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67542 + ... + 68351.

Almost surely, 2^55036665 is an apocalyptic number.

It is an amenable number.

55036665 is a deficient number, since it is larger than the sum of its proper divisors (43622379).

55036665 is a wasteful number, since it uses less digits than its factorization.

55036665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135910 (or 135901 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 55036665 is about 7418.6700290551. The cubic root of 55036665 is about 380.3797335181.

The spelling of 55036665 in words is "fifty-five million, thirty-six thousand, six hundred sixty-five".