51875866 has 16 divisors (see below), whose sum is σ = 90184320. Its totient is φ = 21918960.

The previous prime is 51875861. The next prime is 51875911. The reversal of 51875866 is 66857815.

It is a super-2 number, since 2×51875866² = 5382210946499912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51875861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25101 + ... + 27088.

It is an arithmetic number, because the mean of its divisors is an integer number (5636520).

Almost surely, 2^51875866 is an apocalyptic number.

51875866 is a deficient number, since it is larger than the sum of its proper divisors (38308454).

51875866 is a wasteful number, since it uses less digits than its factorization.

51875866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52269.

The product of its digits is 403200, while the sum is 46.

The square root of 51875866 is about 7202.4902637907. The cubic root of 51875866 is about 372.9538716325.

The spelling of 51875866 in words is "fifty-one million, eight hundred seventy-five thousand, eight hundred sixty-six".