55756567 has 4 divisors (see below), whose sum is σ = 55877976. Its totient is φ = 55635160.

The previous prime is 55756553. The next prime is 55756607. The reversal of 55756567 is 76565755.

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

It is a cyclic number.

It is not a de Polignac number, because 55756567 - 2¹⁵ = 55723799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55756517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60013 + ... + 60934.

It is an arithmetic number, because the mean of its divisors is an integer number (13969494).

Almost surely, 2^55756567 is an apocalyptic number.

55756567 is a deficient number, since it is larger than the sum of its proper divisors (121409).

55756567 is a wasteful number, since it uses less digits than its factorization.

55756567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121408.

The product of its digits is 1102500, while the sum is 46.

The square root of 55756567 is about 7467.0320074311. The cubic root of 55756567 is about 382.0310615898.

The spelling of 55756567 in words is "fifty-five million, seven hundred fifty-six thousand, five hundred sixty-seven".