51136885 has 8 divisors (see below), whose sum is σ = 64594080. Its totient is φ = 38756304.

The previous prime is 51136873. The next prime is 51136909. The reversal of 51136885 is 58863115.

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

It is a cyclic number.

It is not a de Polignac number, because 51136885 - 2¹⁵ = 51104117 is a prime.

It is a super-2 number, since 2×51136885² = 5229962015006450, which contains 22 as substring.

It is a congruent number.

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, 269047 + ... + 269236.

It is an arithmetic number, because the mean of its divisors is an integer number (8074260).

Almost surely, 2^51136885 is an apocalyptic number.

It is an amenable number.

51136885 is a deficient number, since it is larger than the sum of its proper divisors (13457195).

51136885 is a wasteful number, since it uses less digits than its factorization.

51136885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538307.

The product of its digits is 28800, while the sum is 37.

The square root of 51136885 is about 7151.0058733020. The cubic root of 51136885 is about 371.1744638047.

The spelling of 51136885 in words is "fifty-one million, one hundred thirty-six thousand, eight hundred eighty-five".