253747231 has 4 divisors (see below), whose sum is σ = 255214152. Its totient is φ = 252280312.

The previous prime is 253747163. The next prime is 253747267. The reversal of 253747231 is 132747352.

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

It is a cyclic number.

It is not a de Polignac number, because 253747231 - 2⁹ = 253746719 is a prime.

It is a super-2 number, since 2×253747231² = 128775314480334722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253747271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733201 + ... + 733546.

It is an arithmetic number, because the mean of its divisors is an integer number (63803538).

Almost surely, 2^253747231 is an apocalyptic number.

253747231 is a deficient number, since it is larger than the sum of its proper divisors (1466921).

253747231 is a wasteful number, since it uses less digits than its factorization.

253747231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466920.

The product of its digits is 35280, while the sum is 34.

The square root of 253747231 is about 15929.4454077975. The cubic root of 253747231 is about 633.0924056513.

The spelling of 253747231 in words is "two hundred fifty-three million, seven hundred forty-seven thousand, two hundred thirty-one".