252400135 has 8 divisors (see below), whose sum is σ = 326178720. Its totient is φ = 186387744.

The previous prime is 252400133. The next prime is 252400147. The reversal of 252400135 is 531004252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252400135 - 2¹ = 252400133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252400133) 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 7 ways as a sum of consecutive naturals, for example, 1941475 + ... + 1941604.

It is an arithmetic number, because the mean of its divisors is an integer number (40772340).

Almost surely, 2^252400135 is an apocalyptic number.

252400135 is a deficient number, since it is larger than the sum of its proper divisors (73778585).

252400135 is a wasteful number, since it uses less digits than its factorization.

252400135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883097.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 252400135 is about 15887.1059353175. The cubic root of 252400135 is about 631.9700946900.

Adding to 252400135 its reverse (531004252), we get a palindrome (783404387).

The spelling of 252400135 in words is "two hundred fifty-two million, four hundred thousand, one hundred thirty-five".