53666256 has 40 divisors (see below), whose sum is σ = 158444224. Its totient is φ = 15333120.

The previous prime is 53666251. The next prime is 53666287. The reversal of 53666256 is 65266635.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53666251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79525 + ... + 80196.

Almost surely, 2^53666256 is an apocalyptic number.

53666256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53666256 is an abundant number, since it is smaller than the sum of its proper divisors (104777968).

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

53666256 is a wasteful number, since it uses less digits than its factorization.

53666256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159739 (or 159733 counting only the distinct ones).

The product of its digits is 194400, while the sum is 39.

The square root of 53666256 is about 7325.7256295878. The cubic root of 53666256 is about 377.1960180211.

The spelling of 53666256 in words is "fifty-three million, six hundred sixty-six thousand, two hundred fifty-six".