52643866 has 16 divisors (see below), whose sum is σ = 91212480. Its totient is φ = 22521280.

The previous prime is 52643837. The next prime is 52643879. The reversal of 52643866 is 66834625.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70006 + ... + 70753.

It is an arithmetic number, because the mean of its divisors is an integer number (5700780).

Almost surely, 2^52643866 is an apocalyptic number.

52643866 is a deficient number, since it is larger than the sum of its proper divisors (38568614).

52643866 is a wasteful number, since it uses less digits than its factorization.

52643866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140789.

The product of its digits is 207360, while the sum is 40.

The square root of 52643866 is about 7255.6092783446. The cubic root of 52643866 is about 374.7853372914.

The spelling of 52643866 in words is "fifty-two million, six hundred forty-three thousand, eight hundred sixty-six".