53686992 has 20 divisors (see below), whose sum is σ = 138691520. Its totient is φ = 17895648.

The previous prime is 53686961. The next prime is 53687059. The reversal of 53686992 is 29968635.

It is a super-2 number, since 2×53686992² = 5764586220016128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1118479 = 53686992 / (5 + 3 + 6 + 8 + 6 + 9 + 9 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559192 + ... + 559287.

It is an arithmetic number, because the mean of its divisors is an integer number (6934576).

Almost surely, 2^53686992 is an apocalyptic number.

It is an amenable number.

53686992 is an abundant number, since it is smaller than the sum of its proper divisors (85004528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53686992 is a wasteful number, since it uses less digits than its factorization.

53686992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118490 (or 1118484 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 53686992 is about 7327.1407793218. The cubic root of 53686992 is about 377.2445931100.

The spelling of 53686992 in words is "fifty-three million, six hundred eighty-six thousand, nine hundred ninety-two".