51403166 has 4 divisors (see below), whose sum is σ = 77104752. Its totient is φ = 25701582.

The previous prime is 51403147. The next prime is 51403181. The reversal of 51403166 is 66130415.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12850790 + ... + 12850793.

It is an arithmetic number, because the mean of its divisors is an integer number (19276188).

Almost surely, 2^51403166 is an apocalyptic number.

51403166 is a deficient number, since it is larger than the sum of its proper divisors (25701586).

51403166 is a wasteful number, since it uses less digits than its factorization.

51403166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25701585.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 51403166 is about 7169.6001283196. The cubic root of 51403166 is about 371.8176110955.

The spelling of 51403166 in words is "fifty-one million, four hundred three thousand, one hundred sixty-six".