253365731 has 2 divisors, whose sum is σ = 253365732. Its totient is φ = 253365730.

The previous prime is 253365689. The next prime is 253365743. The reversal of 253365731 is 137563352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253365731 - 2⁶ = 253365667 is a prime.

It is a super-2 number, since 2×253365731² = 128388387290328722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 253365691 and 253365700.

It is not a weakly prime, because it can be changed into another prime (253365031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126682865 + 126682866.

It is an arithmetic number, because the mean of its divisors is an integer number (126682866).

Almost surely, 2^253365731 is an apocalyptic number.

253365731 is a deficient number, since it is larger than the sum of its proper divisors (1).

253365731 is an equidigital number, since it uses as much as digits as its factorization.

253365731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 35.

The square root of 253365731 is about 15917.4662242456. The cubic root of 253365731 is about 632.7749691558.

The spelling of 253365731 in words is "two hundred fifty-three million, three hundred sixty-five thousand, seven hundred thirty-one".