51169400 has 24 divisors (see below), whose sum is σ = 118969320. Its totient is φ = 20467680.

The previous prime is 51169397. The next prime is 51169463. The reversal of 51169400 is 496115.

It is a self number, because there is not a number n which added to its sum of digits gives 51169400.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 127724 + ... + 128123.

It is an arithmetic number, because the mean of its divisors is an integer number (4957055).

Almost surely, 2^51169400 is an apocalyptic number.

51169400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51169400 is an abundant number, since it is smaller than the sum of its proper divisors (67799920).

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

51169400 is a wasteful number, since it uses less digits than its factorization.

51169400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255863 (or 255854 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 51169400 is about 7153.2789684172. The cubic root of 51169400 is about 371.2531166248.

The spelling of 51169400 in words is "fifty-one million, one hundred sixty-nine thousand, four hundred".