55958986 has 8 divisors (see below), whose sum is σ = 84242340. Its totient is φ = 27878208.

The previous prime is 55958983. The next prime is 55959011. The reversal of 55958986 is 68985955.

It can be written as a sum of positive squares in 2 ways, for example, as 44635761 + 11323225 = 6681^2 + 3365^2 .

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

It is a super-2 number, since 2×55958986² = 6262816228296392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55958983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49951 + ... + 51058.

Almost surely, 2^55958986 is an apocalyptic number.

55958986 is a deficient number, since it is larger than the sum of its proper divisors (28283354).

55958986 is a wasteful number, since it uses less digits than its factorization.

55958986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101288.

The product of its digits is 3888000, while the sum is 55.

The square root of 55958986 is about 7480.5739084645. The cubic root of 55958986 is about 382.4928126008.

The spelling of 55958986 in words is "fifty-five million, nine hundred fifty-eight thousand, nine hundred eighty-six".