253432133 has 4 divisors (see below), whose sum is σ = 253843500. Its totient is φ = 253020768.

The previous prime is 253432121. The next prime is 253432139. The reversal of 253432133 is 331234352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37724164 + 215707969 = 6142^2 + 14687^2 .

It is a cyclic number.

It is not a de Polignac number, because 253432133 - 2¹⁰ = 253431109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253432139) 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, 204758 + ... + 205991.

It is an arithmetic number, because the mean of its divisors is an integer number (63460875).

Almost surely, 2^253432133 is an apocalyptic number.

It is an amenable number.

253432133 is a deficient number, since it is larger than the sum of its proper divisors (411367).

253432133 is an equidigital number, since it uses as much as digits as its factorization.

253432133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411366.

The product of its digits is 6480, while the sum is 26.

The square root of 253432133 is about 15919.5519095231. The cubic root of 253432133 is about 632.8302434730.

Adding to 253432133 its reverse (331234352), we get a palindrome (584666485).

The spelling of 253432133 in words is "two hundred fifty-three million, four hundred thirty-two thousand, one hundred thirty-three".