51999300 has 72 divisors (see below), whose sum is σ = 167176800. Its totient is φ = 13865760.

The previous prime is 51999281. The next prime is 51999317. The reversal of 51999300 is 399915.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6930 + ... + 12329.

It is an arithmetic number, because the mean of its divisors is an integer number (2321900).

Almost surely, 2^51999300 is an apocalyptic number.

51999300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51999300 is an abundant number, since it is smaller than the sum of its proper divisors (115177500).

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

51999300 is a wasteful number, since it uses less digits than its factorization.

51999300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19282 (or 19269 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 51999300 is about 7211.0540144975. The cubic root of 51999300 is about 373.2494408295.

The spelling of 51999300 in words is "fifty-one million, nine hundred ninety-nine thousand, three hundred".