51166668 has 48 divisors (see below), whose sum is σ = 144474624. Its totient is φ = 13758720.

The previous prime is 51166667. The next prime is 51166673. The reversal of 51166668 is 86666115.

It is not an unprimeable number, because it can be changed into a prime (51166663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16488 + ... + 19343.

It is an arithmetic number, because the mean of its divisors is an integer number (3009888).

Almost surely, 2^51166668 is an apocalyptic number.

It is an amenable number.

51166668 is an abundant number, since it is smaller than the sum of its proper divisors (93307956).

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

51166668 is a wasteful number, since it uses less digits than its factorization.

51166668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35862 (or 35860 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 51166668 is about 7153.0880044915. The cubic root of 51166668 is about 371.2465092803.

The spelling of 51166668 in words is "fifty-one million, one hundred sixty-six thousand, six hundred sixty-eight".