55045971 has 6 divisors (see below), whose sum is σ = 79510860. Its totient is φ = 36697308.

The previous prime is 55045961. The next prime is 55045979. The reversal of 55045971 is 17954055.

It is not a de Polignac number, because 55045971 - 2¹⁰ = 55044947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55045979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3058101 + ... + 3058118.

It is an arithmetic number, because the mean of its divisors is an integer number (13251810).

Almost surely, 2^55045971 is an apocalyptic number.

55045971 is a deficient number, since it is larger than the sum of its proper divisors (24464889).

55045971 is a wasteful number, since it uses less digits than its factorization.

55045971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116225 (or 6116222 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 55045971 is about 7419.2972039136. The cubic root of 55045971 is about 380.4011714347.

The spelling of 55045971 in words is "fifty-five million, forty-five thousand, nine hundred seventy-one".