55440365 has 4 divisors (see below), whose sum is σ = 66528444. Its totient is φ = 44352288.

The previous prime is 55440337. The next prime is 55440391. The reversal of 55440365 is 56304455.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26399044 + 29041321 = 5138^2 + 5389^2 .

It is a cyclic number.

It is not a de Polignac number, because 55440365 - 2²² = 51246061 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, 5544032 + ... + 5544041.

It is an arithmetic number, because the mean of its divisors is an integer number (16632111).

Almost surely, 2^55440365 is an apocalyptic number.

It is an amenable number.

55440365 is a deficient number, since it is larger than the sum of its proper divisors (11088079).

55440365 is a wasteful number, since it uses less digits than its factorization.

55440365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088078.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 55440365 is about 7445.8286980027. The cubic root of 55440365 is about 381.3075111664.

The spelling of 55440365 in words is "fifty-five million, four hundred forty thousand, three hundred sixty-five".