51479800 has 24 divisors (see below), whose sum is σ = 119691000. Its totient is φ = 20591840.

The previous prime is 51479777. The next prime is 51479821. The reversal of 51479800 is 897415.

It is a happy number.

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, 128500 + ... + 128899.

It is an arithmetic number, because the mean of its divisors is an integer number (4987125).

Almost surely, 2^51479800 is an apocalyptic number.

51479800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51479800 is an abundant number, since it is smaller than the sum of its proper divisors (68211200).

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

51479800 is a wasteful number, since it uses less digits than its factorization.

51479800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257415 (or 257406 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 51479800 is about 7174.9425084805. The cubic root of 51479800 is about 372.0022931219.

The spelling of 51479800 in words is "fifty-one million, four hundred seventy-nine thousand, eight hundred".