253431461 has 4 divisors (see below), whose sum is σ = 268339212. Its totient is φ = 238523712.

The previous prime is 253431439. The next prime is 253431469. The reversal of 253431461 is 164134352.

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 195580225 + 57851236 = 13985^2 + 7606^2 .

It is a cyclic number.

It is not a de Polignac number, because 253431461 - 2¹⁴ = 253415077 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 (253431469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7453850 + ... + 7453883.

It is an arithmetic number, because the mean of its divisors is an integer number (67084803).

Almost surely, 2^253431461 is an apocalyptic number.

It is an amenable number.

253431461 is a deficient number, since it is larger than the sum of its proper divisors (14907751).

253431461 is a wasteful number, since it uses less digits than its factorization.

253431461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14907750.

The product of its digits is 8640, while the sum is 29.

The square root of 253431461 is about 15919.5308033874. The cubic root of 253431461 is about 632.8296841355.

The spelling of 253431461 in words is "two hundred fifty-three million, four hundred thirty-one thousand, four hundred sixty-one".