51317627 has 4 divisors (see below), whose sum is σ = 51404760. Its totient is φ = 51230496.

The previous prime is 51317599. The next prime is 51317633. The reversal of 51317627 is 72671315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51317627 is a prime.

It is a super-2 number, since 2×51317627² = 5266997681822258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51317593 and 51317602.

It is not an unprimeable number, because it can be changed into a prime (51317657) 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, 42677 + ... + 43862.

It is an arithmetic number, because the mean of its divisors is an integer number (12851190).

Almost surely, 2^51317627 is an apocalyptic number.

51317627 is a deficient number, since it is larger than the sum of its proper divisors (87133).

51317627 is an equidigital number, since it uses as much as digits as its factorization.

51317627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87132.

The product of its digits is 8820, while the sum is 32.

The square root of 51317627 is about 7163.6322490759. The cubic root of 51317627 is about 371.6112517898.

The spelling of 51317627 in words is "fifty-one million, three hundred seventeen thousand, six hundred twenty-seven".