51315467 has 4 divisors (see below), whose sum is σ = 58646256. Its totient is φ = 43984680.

The previous prime is 51315449. The next prime is 51315479. The reversal of 51315467 is 76451315.

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

It is a cyclic number.

It is not a de Polignac number, because 51315467 - 2⁶ = 51315403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51315437) 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 3 ways as a sum of consecutive naturals, for example, 3665384 + ... + 3665397.

It is an arithmetic number, because the mean of its divisors is an integer number (14661564).

Almost surely, 2^51315467 is an apocalyptic number.

51315467 is a deficient number, since it is larger than the sum of its proper divisors (7330789).

51315467 is an equidigital number, since it uses as much as digits as its factorization.

51315467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7330788.

The product of its digits is 12600, while the sum is 32.

The square root of 51315467 is about 7163.4814859815. The cubic root of 51315467 is about 371.6060379117.

The spelling of 51315467 in words is "fifty-one million, three hundred fifteen thousand, four hundred sixty-seven".