55977867 has 24 divisors (see below), whose sum is σ = 88955568. Its totient is φ = 33918720.

The previous prime is 55977853. The next prime is 55977869. The reversal of 55977867 is 76877955.

55977867 is a `hidden beast` number, since 559 + 7 + 7 + 86 + 7 = 666.

It is not a de Polignac number, because 55977867 - 2⁴ = 55977851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55977869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9643 + ... + 14315.

It is an arithmetic number, because the mean of its divisors is an integer number (3706482).

Almost surely, 2^55977867 is an apocalyptic number.

55977867 is a deficient number, since it is larger than the sum of its proper divisors (32977701).

55977867 is a wasteful number, since it uses less digits than its factorization.

55977867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4712 (or 4687 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 55977867 is about 7481.8358041326. The cubic root of 55977867 is about 382.5358264533.

The spelling of 55977867 in words is "fifty-five million, nine hundred seventy-seven thousand, eight hundred sixty-seven".