55757545 has 4 divisors (see below), whose sum is σ = 66909060. Its totient is φ = 44606032.

The previous prime is 55757531. The next prime is 55757551. The reversal of 55757545 is 54575755.

It is a happy number.

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 37601424 + 18156121 = 6132^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 55757545 - 2²⁵ = 22203113 is a prime.

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, 5575750 + ... + 5575759.

It is an arithmetic number, because the mean of its divisors is an integer number (16727265).

Almost surely, 2^55757545 is an apocalyptic number.

It is an amenable number.

55757545 is a deficient number, since it is larger than the sum of its proper divisors (11151515).

55757545 is a wasteful number, since it uses less digits than its factorization.

55757545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11151514.

The product of its digits is 612500, while the sum is 43.

The square root of 55757545 is about 7467.0974950110. The cubic root of 55757545 is about 382.0332952531.

The spelling of 55757545 in words is "fifty-five million, seven hundred fifty-seven thousand, five hundred forty-five".