52194447 has 12 divisors (see below), whose sum is σ = 75484344. Its totient is φ = 34753680.

The previous prime is 52194433. The next prime is 52194449. The reversal of 52194447 is 74449125.

It is a happy number.

52194447 is a `hidden beast` number, since 521 + 94 + 4 + 47 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-52194447 is a prime.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52194449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5388 + ... + 11550.

It is an arithmetic number, because the mean of its divisors is an integer number (6290362).

Almost surely, 2^52194447 is an apocalyptic number.

52194447 is a deficient number, since it is larger than the sum of its proper divisors (23289897).

52194447 is a wasteful number, since it uses less digits than its factorization.

52194447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110 (or 7107 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 52194447 is about 7224.5724440966. The cubic root of 52194447 is about 373.7157777489.

The spelling of 52194447 in words is "fifty-two million, one hundred ninety-four thousand, four hundred forty-seven".