51371668 has 24 divisors (see below), whose sum is σ = 95044320. Its totient is φ = 24228000.

The previous prime is 51371659. The next prime is 51371669. The reversal of 51371668 is 86617315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51371669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17730 + ... + 20422.

It is an arithmetic number, because the mean of its divisors is an integer number (3960180).

Almost surely, 2^51371668 is an apocalyptic number.

It is an amenable number.

51371668 is a deficient number, since it is larger than the sum of its proper divisors (43672652).

51371668 is a wasteful number, since it uses less digits than its factorization.

51371668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967 (or 2965 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 51371668 is about 7167.4031559554. The cubic root of 51371668 is about 371.7416501190.

The spelling of 51371668 in words is "fifty-one million, three hundred seventy-one thousand, six hundred sixty-eight".