253432045 has 4 divisors (see below), whose sum is σ = 304118460. Its totient is φ = 202745632.

The previous prime is 253432033. The next prime is 253432057. The reversal of 253432045 is 540234352.

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

It is an interprime number because it is at equal distance from previous prime (253432033) and next prime (253432057).

It can be written as a sum of positive squares in 2 ways, for example, as 46158436 + 207273609 = 6794^2 + 14397^2 .

It is a cyclic number.

It is not a de Polignac number, because 253432045 - 2¹¹ = 253429997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25343200 + ... + 25343209.

It is an arithmetic number, because the mean of its divisors is an integer number (76029615).

Almost surely, 2^253432045 is an apocalyptic number.

It is an amenable number.

253432045 is a deficient number, since it is larger than the sum of its proper divisors (50686415).

253432045 is an equidigital number, since it uses as much as digits as its factorization.

253432045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50686414.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 253432045 is about 15919.5491456260. The cubic root of 253432045 is about 632.8301702265.

Adding to 253432045 its reverse (540234352), we get a palindrome (793666397).

The spelling of 253432045 in words is "two hundred fifty-three million, four hundred thirty-two thousand, forty-five".