54001998 has 16 divisors (see below), whose sum is σ = 120004560. Its totient is φ = 18000648.

The previous prime is 54001993. The next prime is 54002021. The reversal of 54001998 is 89910045.

54001998 is a modest number, since divided by 1998 gives 54 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54001993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499965 + ... + 500072.

It is an arithmetic number, because the mean of its divisors is an integer number (7500285).

Almost surely, 2^54001998 is an apocalyptic number.

54001998 is an abundant number, since it is smaller than the sum of its proper divisors (66002562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54001998 is a wasteful number, since it uses less digits than its factorization.

54001998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000048 (or 1000042 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 54001998 is about 7348.6051737728. The cubic root of 54001998 is about 377.9809766189.

The spelling of 54001998 in words is "fifty-four million, one thousand, nine hundred ninety-eight".