51990300 has 108 divisors (see below), whose sum is σ = 165807096. Its totient is φ = 13622400.

The previous prime is 51990293. The next prime is 51990307. The reversal of 51990300 is 309915.

51990300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51990293) and next prime (51990307).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51990307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 54427 + ... + 55373.

Almost surely, 2^51990300 is an apocalyptic number.

51990300 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 51990300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82903548).

51990300 is an abundant number, since it is smaller than the sum of its proper divisors (113816796).

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

51990300 is a wasteful number, since it uses less digits than its factorization.

51990300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 51990300 is about 7210.4299455719. The cubic root of 51990300 is about 373.2279056755.

The spelling of 51990300 in words is "fifty-one million, nine hundred ninety thousand, three hundred".