55518958 has 8 divisors (see below), whose sum is σ = 90849240. Its totient is φ = 25235880.

The previous prime is 55518937. The next prime is 55518971. The reversal of 55518958 is 85981555.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1261773 + ... + 1261816.

It is an arithmetic number, because the mean of its divisors is an integer number (11356155).

Almost surely, 2^55518958 is an apocalyptic number.

55518958 is a deficient number, since it is larger than the sum of its proper divisors (35330282).

55518958 is a wasteful number, since it uses less digits than its factorization.

55518958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523602.

The product of its digits is 360000, while the sum is 46.

The square root of 55518958 is about 7451.1044818872. The cubic root of 55518958 is about 381.4876082930.

The spelling of 55518958 in words is "fifty-five million, five hundred eighteen thousand, nine hundred fifty-eight".