51392667 has 16 divisors (see below), whose sum is σ = 71880192. Its totient is φ = 32623200.

The previous prime is 51392659. The next prime is 51392681. The reversal of 51392667 is 76629315.

It is not a de Polignac number, because 51392667 - 2³ = 51392659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51392167) 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, 292 + ... + 10142.

It is an arithmetic number, because the mean of its divisors is an integer number (4492512).

Almost surely, 2^51392667 is an apocalyptic number.

51392667 is a deficient number, since it is larger than the sum of its proper divisors (20487525).

51392667 is a wasteful number, since it uses less digits than its factorization.

51392667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938.

The product of its digits is 68040, while the sum is 39.

The square root of 51392667 is about 7168.8679022563. The cubic root of 51392667 is about 371.7922950226.

The spelling of 51392667 in words is "fifty-one million, three hundred ninety-two thousand, six hundred sixty-seven".