56657286 has 64 divisors (see below), whose sum is σ = 147816960. Its totient is φ = 15746400.

The previous prime is 56657281. The next prime is 56657317. The reversal of 56657286 is 68275665.

56657286 is a `hidden beast` number, since 566 + 5 + 7 + 2 + 86 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56657281) 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, 11961 + ... + 16011.

It is an arithmetic number, because the mean of its divisors is an integer number (2309640).

Almost surely, 2^56657286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56657286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73908480).

56657286 is an abundant number, since it is smaller than the sum of its proper divisors (91159674).

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

56657286 is a wasteful number, since it uses less digits than its factorization.

56657286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106 (or 4100 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 56657286 is about 7527.1034269498. The cubic root of 56657286 is about 384.0772549642.

The spelling of 56657286 in words is "fifty-six million, six hundred fifty-seven thousand, two hundred eighty-six".