55756505 has 8 divisors (see below), whose sum is σ = 76466112. Its totient is φ = 38233008.

The previous prime is 55756489. The next prime is 55756511. The reversal of 55756505 is 50565755.

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

It is a cyclic number.

It is not a de Polignac number, because 55756505 - 2⁴ = 55756489 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, 796487 + ... + 796556.

It is an arithmetic number, because the mean of its divisors is an integer number (9558264).

Almost surely, 2^55756505 is an apocalyptic number.

It is an amenable number.

55756505 is a deficient number, since it is larger than the sum of its proper divisors (20709607).

55756505 is a wasteful number, since it uses less digits than its factorization.

55756505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593055.

The product of its (nonzero) digits is 131250, while the sum is 38.

The square root of 55756505 is about 7467.0278558473. The cubic root of 55756505 is about 382.0309199865.

The spelling of 55756505 in words is "fifty-five million, seven hundred fifty-six thousand, five hundred five".