51267868 has 24 divisors (see below), whose sum is σ = 92567552. Its totient is φ = 24830064.

The previous prime is 51267857. The next prime is 51267883. The reversal of 51267868 is 86876215.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

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, 20671 + ... + 23017.

Almost surely, 2^51267868 is an apocalyptic number.

It is an amenable number.

51267868 is a deficient number, since it is larger than the sum of its proper divisors (41299684).

51267868 is a wasteful number, since it uses less digits than its factorization.

51267868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2519 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 51267868 is about 7160.1583781366. The cubic root of 51267868 is about 371.4911047433.

The spelling of 51267868 in words is "fifty-one million, two hundred sixty-seven thousand, eight hundred sixty-eight".