51401166 has 32 divisors (see below), whose sum is σ = 112609440. Its totient is φ = 15568896.

The previous prime is 51401123. The next prime is 51401171. The reversal of 51401166 is 66110415.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 5731 + ... + 11646.

It is an arithmetic number, because the mean of its divisors is an integer number (3519045).

Almost surely, 2^51401166 is an apocalyptic number.

51401166 is an abundant number, since it is smaller than the sum of its proper divisors (61208274).

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

51401166 is a wasteful number, since it uses less digits than its factorization.

51401166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17428.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 51401166 is about 7169.4606491702. The cubic root of 51401166 is about 371.8127887929.

The spelling of 51401166 in words is "fifty-one million, four hundred one thousand, one hundred sixty-six".