55572911 has 4 divisors (see below), whose sum is σ = 56092392. Its totient is φ = 55053432.

The previous prime is 55572893. The next prime is 55572919. The reversal of 55572911 is 11927555.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55572911 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 (55572919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259580 + ... + 259793.

It is an arithmetic number, because the mean of its divisors is an integer number (14023098).

Almost surely, 2^55572911 is an apocalyptic number.

55572911 is a deficient number, since it is larger than the sum of its proper divisors (519481).

55572911 is a wasteful number, since it uses less digits than its factorization.

55572911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519480.

The product of its digits is 15750, while the sum is 35.

The square root of 55572911 is about 7454.7240726938. The cubic root of 55572911 is about 381.6111440964.

The spelling of 55572911 in words is "fifty-five million, five hundred seventy-two thousand, nine hundred eleven".