252104643 has 80 divisors (see below), whose sum is σ = 451560384. Its totient is φ = 137168640.

The previous prime is 252104639. The next prime is 252104647. The reversal of 252104643 is 346401252.

252104643 is a `hidden beast` number, since 2 + 5 + 2 + 10 + 4 + 643 = 666.

It is an interprime number because it is at equal distance from previous prime (252104639) and next prime (252104647).

It is not a de Polignac number, because 252104643 - 2² = 252104639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252104647) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1279621 + ... + 1279817.

Almost surely, 2^252104643 is an apocalyptic number.

252104643 is a deficient number, since it is larger than the sum of its proper divisors (199455741).

252104643 is a wasteful number, since it uses less digits than its factorization.

252104643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 252104643 is about 15877.8034689941. The cubic root of 252104643 is about 631.7233766109.

Adding to 252104643 its reverse (346401252), we get a palindrome (598505895).

The spelling of 252104643 in words is "two hundred fifty-two million, one hundred four thousand, six hundred forty-three".