252400033 has 4 divisors (see below), whose sum is σ = 252528048. Its totient is φ = 252272020.

The previous prime is 252400019. The next prime is 252400039. The reversal of 252400033 is 330004252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252400033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252400039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61003 + ... + 65008.

It is an arithmetic number, because the mean of its divisors is an integer number (63132012).

Almost surely, 2^252400033 is an apocalyptic number.

It is an amenable number.

252400033 is a deficient number, since it is larger than the sum of its proper divisors (128015).

252400033 is a wasteful number, since it uses less digits than its factorization.

252400033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128014.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 252400033 is about 15887.1027251667. The cubic root of 252400033 is about 631.9700095594.

Adding to 252400033 its reverse (330004252), we get a palindrome (582404285).

The spelling of 252400033 in words is "two hundred fifty-two million, four hundred thousand, thirty-three".