51560685 has 32 divisors (see below), whose sum is σ = 99999360. Its totient is φ = 24998400.

The previous prime is 51560659. The next prime is 51560689. The reversal of 51560685 is 58606515.

51560685 is a `hidden beast` number, since 515 + 60 + 6 + 85 = 666.

It is not a de Polignac number, because 51560685 - 2¹⁴ = 51544301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51560689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15876 + ... + 18845.

It is an arithmetic number, because the mean of its divisors is an integer number (3124980).

Almost surely, 2^51560685 is an apocalyptic number.

51560685 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51560685 is a deficient number, since it is larger than the sum of its proper divisors (48438675).

51560685 is a wasteful number, since it uses less digits than its factorization.

51560685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34746 (or 34740 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 51560685 is about 7180.5769266821. The cubic root of 51560685 is about 372.1970210243.

The spelling of 51560685 in words is "fifty-one million, five hundred sixty thousand, six hundred eighty-five".