252533403 has 8 divisors (see below), whose sum is σ = 374123600. Its totient is φ = 168355584.

The previous prime is 252533357. The next prime is 252533447. The reversal of 252533403 is 304335252.

252533403 is a `hidden beast` number, since 2 + 5 + 253 + 3 + 403 = 666.

It is not a de Polignac number, because 252533403 - 2¹² = 252529307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9353089 = 252533403 / (2 + 5 + 2 + 5 + 3 + 3 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252533483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676518 + ... + 4676571.

It is an arithmetic number, because the mean of its divisors is an integer number (46765450).

Almost surely, 2^252533403 is an apocalyptic number.

252533403 is a deficient number, since it is larger than the sum of its proper divisors (121590197).

252533403 is an equidigital number, since it uses as much as digits as its factorization.

252533403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9353098 (or 9353092 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 252533403 is about 15891.2996007249. The cubic root of 252533403 is about 632.0813024645.

Adding to 252533403 its reverse (304335252), we get a palindrome (556868655).

The spelling of 252533403 in words is "two hundred fifty-two million, five hundred thirty-three thousand, four hundred three".