253132505 has 8 divisors (see below), whose sum is σ = 309490632. Its totient is φ = 198684928.

The previous prime is 253132501. The next prime is 253132547. The reversal of 253132505 is 505231352.

It can be written as a sum of positive squares in 4 ways, for example, as 95981209 + 157151296 = 9797^2 + 12536^2 .

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 253132505 - 2² = 253132501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253132501) 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, 477344 + ... + 477873.

It is an arithmetic number, because the mean of its divisors is an integer number (38686329).

Almost surely, 2^253132505 is an apocalyptic number.

It is an amenable number.

253132505 is a deficient number, since it is larger than the sum of its proper divisors (56358127).

253132505 is an equidigital number, since it uses as much as digits as its factorization.

253132505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955275.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 253132505 is about 15910.1384343443. The cubic root of 253132505 is about 632.5807507290.

Adding to 253132505 its reverse (505231352), we get a palindrome (758363857).

The spelling of 253132505 in words is "two hundred fifty-three million, one hundred thirty-two thousand, five hundred five".