55712971 has 4 divisors (see below), whose sum is σ = 55733944. Its totient is φ = 55692000.

The previous prime is 55712963. The next prime is 55712977. The reversal of 55712971 is 17921755.

55712971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55712971 - 2³ = 55712963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55712971.

It is not an unprimeable number, because it can be changed into a prime (55712977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5805 + ... + 12046.

It is an arithmetic number, because the mean of its divisors is an integer number (13933486).

Almost surely, 2^55712971 is an apocalyptic number.

55712971 is a deficient number, since it is larger than the sum of its proper divisors (20973).

55712971 is a wasteful number, since it uses less digits than its factorization.

55712971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20972.

The product of its digits is 22050, while the sum is 37.

The square root of 55712971 is about 7464.1122044085. The cubic root of 55712971 is about 381.9314657347.

The spelling of 55712971 in words is "fifty-five million, seven hundred twelve thousand, nine hundred seventy-one".