54977881 has 32 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 42104832.

The previous prime is 54977873. The next prime is 54977891. The reversal of 54977881 is 18877945.

It is not a de Polignac number, because 54977881 - 2³ = 54977873 is a prime.

It is a super-2 number, since 2×54977881² = 6045134798500322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54977851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307050 + ... + 307228.

It is an arithmetic number, because the mean of its divisors is an integer number (2187000).

Almost surely, 2^54977881 is an apocalyptic number.

It is an amenable number.

54977881 is a deficient number, since it is larger than the sum of its proper divisors (15006119).

54977881 is a wasteful number, since it uses less digits than its factorization.

54977881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its digits is 564480, while the sum is 49.

The square root of 54977881 is about 7414.7070744568. The cubic root of 54977881 is about 380.2442589341.

The spelling of 54977881 in words is "fifty-four million, nine hundred seventy-seven thousand, eight hundred eighty-one".