51136585 has 8 divisors (see below), whose sum is σ = 61619976. Its totient is φ = 40738560.

The previous prime is 51136537. The next prime is 51136607. The reversal of 51136585 is 58563115.

It can be written as a sum of positive squares in 4 ways, for example, as 28440889 + 22695696 = 5333^2 + 4764^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51136585 - 2⁷ = 51136457 is a prime.

It is a super-2 number, since 2×51136585² = 5229900650924450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51136585.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20014 + ... + 22423.

It is an arithmetic number, because the mean of its divisors is an integer number (7702497).

Almost surely, 2^51136585 is an apocalyptic number.

It is an amenable number.

51136585 is a deficient number, since it is larger than the sum of its proper divisors (10483391).

51136585 is a wasteful number, since it uses less digits than its factorization.

51136585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42683.

The product of its digits is 18000, while the sum is 34.

The square root of 51136585 is about 7150.9848972012. The cubic root of 51136585 is about 371.1737379584.

The spelling of 51136585 in words is "fifty-one million, one hundred thirty-six thousand, five hundred eighty-five".