55579923 has 24 divisors (see below), whose sum is σ = 91972608. Its totient is φ = 31683312.

The previous prime is 55579861. The next prime is 55579943. The reversal of 55579923 is 32997555.

55579923 is a `hidden beast` number, since 5 + 557 + 9 + 92 + 3 = 666.

It is not a de Polignac number, because 55579923 - 2⁹ = 55579411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55579943) 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, 34686 + ... + 36252.

It is an arithmetic number, because the mean of its divisors is an integer number (3832192).

Almost surely, 2^55579923 is an apocalyptic number.

55579923 is a deficient number, since it is larger than the sum of its proper divisors (36392685).

55579923 is a wasteful number, since it uses less digits than its factorization.

55579923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2140 counting only the distinct ones).

The product of its digits is 425250, while the sum is 45.

The square root of 55579923 is about 7455.1943636635. The cubic root of 55579923 is about 381.6271935515.

The spelling of 55579923 in words is "fifty-five million, five hundred seventy-nine thousand, nine hundred twenty-three".