55549971 has 12 divisors (see below), whose sum is σ = 80440360. Its totient is φ = 36940320.

The previous prime is 55549961. The next prime is 55549979. The reversal of 55549971 is 17994555.

55549971 is a `hidden beast` number, since 5 + 554 + 9 + 97 + 1 = 666.

It is not a de Polignac number, because 55549971 - 2⁷ = 55549843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55549979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3865 + ... + 11226.

Almost surely, 2^55549971 is an apocalyptic number.

55549971 is a deficient number, since it is larger than the sum of its proper divisors (24890389).

55549971 is a wasteful number, since it uses less digits than its factorization.

55549971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15506 (or 15503 counting only the distinct ones).

The product of its digits is 283500, while the sum is 45.

The square root of 55549971 is about 7453.1852922090. The cubic root of 55549971 is about 381.5586283154.

The spelling of 55549971 in words is "fifty-five million, five hundred forty-nine thousand, nine hundred seventy-one".