52194681 has 72 divisors (see below), whose sum is σ = 97598592. Its totient is φ = 26294400.

The previous prime is 52194661. The next prime is 52194683. The reversal of 52194681 is 18649125.

It is not a de Polignac number, because 52194681 - 2⁶ = 52194617 is a prime.

It is a super-2 number, since 2×52194681² = 5448569449383522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (52194683) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 312460 + ... + 312626.

It is an arithmetic number, because the mean of its divisors is an integer number (1355536).

Almost surely, 2^52194681 is an apocalyptic number.

It is an amenable number.

52194681 is a deficient number, since it is larger than the sum of its proper divisors (45403911).

52194681 is a wasteful number, since it uses less digits than its factorization.

52194681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 229 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 52194681 is about 7224.5886388084. The cubic root of 52194681 is about 373.7163362334.

The spelling of 52194681 in words is "fifty-two million, one hundred ninety-four thousand, six hundred eighty-one".