51887400 has 96 divisors (see below), whose sum is σ = 170346240. Its totient is φ = 13020160.

The previous prime is 51887399. The next prime is 51887411. The reversal of 51887400 is 478815.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7657 + ... + 12743.

It is an arithmetic number, because the mean of its divisors is an integer number (1774440).

Almost surely, 2^51887400 is an apocalyptic number.

51887400 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 51887400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85173120).

51887400 is an abundant number, since it is smaller than the sum of its proper divisors (118458840).

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

51887400 is a wasteful number, since it uses less digits than its factorization.

51887400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123 (or 5114 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 51887400 is about 7203.2909145751. The cubic root of 51887400 is about 372.9815102470.

The spelling of 51887400 in words is "fifty-one million, eight hundred eighty-seven thousand, four hundred".