55686492 has 72 divisors (see below), whose sum is σ = 156920400. Its totient is φ = 16547328.

The previous prime is 55686457. The next prime is 55686523. The reversal of 55686492 is 29468655.

55686492 is a `hidden beast` number, since 556 + 8 + 6 + 4 + 92 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9234 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (2179450).

Almost surely, 2^55686492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55686492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78460200).

55686492 is an abundant number, since it is smaller than the sum of its proper divisors (101233908).

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

55686492 is a wasteful number, since it uses less digits than its factorization.

55686492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835 (or 4830 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 55686492 is about 7462.3382394528. The cubic root of 55686492 is about 381.8709486134.

The spelling of 55686492 in words is "fifty-five million, six hundred eighty-six thousand, four hundred ninety-two".