51261168 has 40 divisors (see below), whose sum is σ = 151343488. Its totient is φ = 14645952.

The previous prime is 51261157. The next prime is 51261179. The reversal of 51261168 is 86116215.

51261168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51261157) and next prime (51261179).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75946 + ... + 76617.

Almost surely, 2^51261168 is an apocalyptic number.

It is an amenable number.

51261168 is an abundant number, since it is smaller than the sum of its proper divisors (100082320).

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

51261168 is a wasteful number, since it uses less digits than its factorization.

51261168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152581 (or 152575 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 51261168 is about 7159.6904961039. The cubic root of 51261168 is about 371.4749211249.

The spelling of 51261168 in words is "fifty-one million, two hundred sixty-one thousand, one hundred sixty-eight".