55247565 has 8 divisors (see below), whose sum is σ = 88396128. Its totient is φ = 29465360.

The previous prime is 55247557. The next prime is 55247593. The reversal of 55247565 is 56574255.

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

It is not a de Polignac number, because 55247565 - 2³ = 55247557 is a prime.

It is a congruent 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, 1841571 + ... + 1841600.

It is an arithmetic number, because the mean of its divisors is an integer number (11049516).

Almost surely, 2^55247565 is an apocalyptic number.

It is an amenable number.

55247565 is a deficient number, since it is larger than the sum of its proper divisors (33148563).

55247565 is a wasteful number, since it uses less digits than its factorization.

55247565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683179.

The product of its digits is 210000, while the sum is 39.

The square root of 55247565 is about 7432.8705760292. The cubic root of 55247565 is about 380.8649847792.

The spelling of 55247565 in words is "fifty-five million, two hundred forty-seven thousand, five hundred sixty-five".