51168105 has 20 divisors (see below), whose sum is σ = 91724292. Its totient is φ = 27289440.

The previous prime is 51168097. The next prime is 51168119. The reversal of 51168105 is 50186115.

It can be written as a sum of positive squares in 2 ways, for example, as 7884864 + 43283241 = 2808^2 + 6579^2 .

It is not a de Polignac number, because 51168105 - 2³ = 51168097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62766 + ... + 63575.

Almost surely, 2^51168105 is an apocalyptic number.

It is an amenable number.

51168105 is a deficient number, since it is larger than the sum of its proper divisors (40556187).

51168105 is a wasteful number, since it uses less digits than its factorization.

51168105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126358 (or 126349 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 51168105 is about 7153.1884499152. The cubic root of 51168105 is about 371.2499846954.

The spelling of 51168105 in words is "fifty-one million, one hundred sixty-eight thousand, one hundred five".