55539998 has 8 divisors (see below), whose sum is σ = 83435808. Its totient is φ = 27728064.

The previous prime is 55539973. The next prime is 55540007. The reversal of 55539998 is 89993555.

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, 19286 + ... + 21977.

It is an arithmetic number, because the mean of its divisors is an integer number (10429476).

Almost surely, 2^55539998 is an apocalyptic number.

55539998 is a deficient number, since it is larger than the sum of its proper divisors (27895810).

55539998 is a wasteful number, since it uses less digits than its factorization.

55539998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41938.

The product of its digits is 2187000, while the sum is 53.

The square root of 55539998 is about 7452.5162193718. The cubic root of 55539998 is about 381.5357929483.

It can be divided in two parts, 5553 and 9998, that added together give a palindrome (15551).

The spelling of 55539998 in words is "fifty-five million, five hundred thirty-nine thousand, nine hundred ninety-eight".