51172679 has 2 divisors, whose sum is σ = 51172680. Its totient is φ = 51172678.

The previous prime is 51172663. The next prime is 51172687. The reversal of 51172679 is 97627115.

51172679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51172679 - 2⁴ = 51172663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51172619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25586339 + 25586340.

It is an arithmetic number, because the mean of its divisors is an integer number (25586340).

Almost surely, 2^51172679 is an apocalyptic number.

51172679 is a deficient number, since it is larger than the sum of its proper divisors (1).

51172679 is an equidigital number, since it uses as much as digits as its factorization.

51172679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 38.

The square root of 51172679 is about 7153.5081603364. The cubic root of 51172679 is about 371.2610465788.

The spelling of 51172679 in words is "fifty-one million, one hundred seventy-two thousand, six hundred seventy-nine".