51251167 has 4 divisors (see below), whose sum is σ = 55910376. Its totient is φ = 46591960.

The previous prime is 51251143. The next prime is 51251191. The reversal of 51251167 is 76115215.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51251143) and next prime (51251191).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51251167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51251467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2329588 + ... + 2329609.

It is an arithmetic number, because the mean of its divisors is an integer number (13977594).

Almost surely, 2^51251167 is an apocalyptic number.

51251167 is a deficient number, since it is larger than the sum of its proper divisors (4659209).

51251167 is a wasteful number, since it uses less digits than its factorization.

51251167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4659208.

The product of its digits is 2100, while the sum is 28.

The square root of 51251167 is about 7158.9920379897. The cubic root of 51251167 is about 371.4507614314.

It can be divided in two parts, 512511 and 67, that added together give a triangular number (512578 = T₁₀₁₂).

The spelling of 51251167 in words is "fifty-one million, two hundred fifty-one thousand, one hundred sixty-seven".