55931877 has 20 divisors (see below), whose sum is σ = 87952480. Its totient is φ = 35324424.

The previous prime is 55931861. The next prime is 55931879. The reversal of 55931877 is 77813955.

It is not a de Polignac number, because 55931877 - 2⁴ = 55931861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55931879) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16633 + ... + 19710.

It is an arithmetic number, because the mean of its divisors is an integer number (4397624).

Almost surely, 2^55931877 is an apocalyptic number.

55931877 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

55931877 is a deficient number, since it is larger than the sum of its proper divisors (32020603).

55931877 is a wasteful number, since it uses less digits than its factorization.

55931877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36374 (or 36365 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 55931877 is about 7478.7617290565. The cubic root of 55931877 is about 382.4310371634.

The spelling of 55931877 in words is "fifty-five million, nine hundred thirty-one thousand, eight hundred seventy-seven".