55271977 has 8 divisors (see below), whose sum is σ = 58447872. Its totient is φ = 52183200.

The previous prime is 55271971. The next prime is 55271987. The reversal of 55271977 is 77917255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55271977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55271971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20473 + ... + 23014.

It is an arithmetic number, because the mean of its divisors is an integer number (7305984).

Almost surely, 2^55271977 is an apocalyptic number.

It is an amenable number.

55271977 is a deficient number, since it is larger than the sum of its proper divisors (3175895).

55271977 is a wasteful number, since it uses less digits than its factorization.

55271977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43559.

The product of its digits is 154350, while the sum is 43.

The square root of 55271977 is about 7434.5125596773. The cubic root of 55271977 is about 380.9210735673.

The spelling of 55271977 in words is "fifty-five million, two hundred seventy-one thousand, nine hundred seventy-seven".