51685933 has 16 divisors (see below), whose sum is σ = 59222016. Its totient is φ = 44686080.

The previous prime is 51685891. The next prime is 51685939. The reversal of 51685933 is 33958615.

It is a cyclic number.

It is not a de Polignac number, because 51685933 - 2¹³ = 51677741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51685939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59460 + ... + 60322.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376).

Almost surely, 2^51685933 is an apocalyptic number.

It is an amenable number.

51685933 is a deficient number, since it is larger than the sum of its proper divisors (7536083).

51685933 is a wasteful number, since it uses less digits than its factorization.

51685933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164.

The product of its digits is 97200, while the sum is 40.

The square root of 51685933 is about 7189.2929415903. The cubic root of 51685933 is about 372.4981499240.

The spelling of 51685933 in words is "fifty-one million, six hundred eighty-five thousand, nine hundred thirty-three".