54999000 has 320 divisors, whose sum is σ = 221981760. Its totient is φ = 12441600.

The previous prime is 54998989. The next prime is 54999011. The reversal of 54999000 is 99945.

It is an interprime number because it is at equal distance from previous prime (54998989) and next prime (54999011).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 566952 + ... + 567048.

It is an arithmetic number, because the mean of its divisors is an integer number (693693).

Almost surely, 2^54999000 is an apocalyptic number.

54999000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54999000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110990880).

54999000 is an abundant number, since it is smaller than the sum of its proper divisors (166982760).

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

54999000 is a wasteful number, since it uses less digits than its factorization.

54999000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 54999000 is about 7416.1310668030. The cubic root of 54999000 is about 380.2929412425.

The spelling of 54999000 in words is "fifty-four million, nine hundred ninety-nine thousand".