55533998 has 32 divisors (see below), whose sum is σ = 95692800. Its totient is φ = 23957856.

The previous prime is 55533997. The next prime is 55534007. The reversal of 55533998 is 89933555.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55533997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38315 + ... + 39737.

It is an arithmetic number, because the mean of its divisors is an integer number (2990400).

Almost surely, 2^55533998 is an apocalyptic number.

55533998 is a deficient number, since it is larger than the sum of its proper divisors (40158802).

55533998 is a wasteful number, since it uses less digits than its factorization.

55533998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536.

The product of its digits is 729000, while the sum is 47.

The square root of 55533998 is about 7452.1136598954. The cubic root of 55533998 is about 381.5220533175.

The spelling of 55533998 in words is "fifty-five million, five hundred thirty-three thousand, nine hundred ninety-eight".