51172659 has 12 divisors (see below), whose sum is σ = 74192352. Its totient is φ = 33987600.

The previous prime is 51172621. The next prime is 51172663. The reversal of 51172659 is 95627115.

51172659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51172659 - 2⁷ = 51172531 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a 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 in 11 ways as a sum of consecutive naturals, for example, 8052 + ... + 12929.

It is an arithmetic number, because the mean of its divisors is an integer number (6182696).

Almost surely, 2^51172659 is an apocalyptic number.

51172659 is a deficient number, since it is larger than the sum of its proper divisors (23019693).

51172659 is a wasteful number, since it uses less digits than its factorization.

51172659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21258 (or 21255 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 51172659 is about 7153.5067624208. The cubic root of 51172659 is about 371.2609982117.

It can be divided in two parts, 5117 and 2659, that added together give a 5-th power (7776 = 6⁵).

The spelling of 51172659 in words is "fifty-one million, one hundred seventy-two thousand, six hundred fifty-nine".