51775868 has 12 divisors (see below), whose sum is σ = 91322112. Its totient is φ = 25683840.

The previous prime is 51775849. The next prime is 51775873. The reversal of 51775868 is 86857715.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50453 + ... + 51468.

It is an arithmetic number, because the mean of its divisors is an integer number (7610176).

Almost surely, 2^51775868 is an apocalyptic number.

It is an amenable number.

51775868 is a deficient number, since it is larger than the sum of its proper divisors (39546244).

51775868 is a wasteful number, since it uses less digits than its factorization.

51775868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102052 (or 102050 counting only the distinct ones).

The product of its digits is 470400, while the sum is 47.

The square root of 51775868 is about 7195.5450106298. The cubic root of 51775868 is about 372.7140772067.

The spelling of 51775868 in words is "fifty-one million, seven hundred seventy-five thousand, eight hundred sixty-eight".