53056666 has 8 divisors (see below), whose sum is σ = 85706964. Its totient is φ = 24487680.

The previous prime is 53056649. The next prime is 53056669. The reversal of 53056666 is 66665035.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52867441 + 189225 = 7271^2 + 435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (53056669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020295 + ... + 1020346.

Almost surely, 2^53056666 is an apocalyptic number.

53056666 is a deficient number, since it is larger than the sum of its proper divisors (32650298).

53056666 is a wasteful number, since it uses less digits than its factorization.

53056666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040656.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 53056666 is about 7284.0006864360. Note that the first 3 decimals coincide. The cubic root of 53056666 is about 375.7623979848.

The spelling of 53056666 in words is "fifty-three million, fifty-six thousand, six hundred sixty-six".