51326900 has 18 divisors (see below), whose sum is σ = 111379590. Its totient is φ = 20530720.

The previous prime is 51326879. The next prime is 51326903. The reversal of 51326900 is 962315.

It can be written as a sum of positive squares in 3 ways, for example, as 13823524 + 37503376 = 3718^2 + 6124^2 .

It is a super-2 number, since 2×51326900² = 5268901327220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51326900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51326903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 256535 + ... + 256734.

It is an arithmetic number, because the mean of its divisors is an integer number (6187755).

Almost surely, 2^51326900 is an apocalyptic number.

51326900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51326900 is an abundant number, since it is smaller than the sum of its proper divisors (60052690).

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

51326900 is a wasteful number, since it uses less digits than its factorization.

51326900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513283 (or 513276 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 51326900 is about 7164.2794473694. The cubic root of 51326900 is about 371.6336335964.

The spelling of 51326900 in words is "fifty-one million, three hundred twenty-six thousand, nine hundred".