253253757 has 4 divisors (see below), whose sum is σ = 337671680. Its totient is φ = 168835836.

The previous prime is 253253753. The next prime is 253253773. The reversal of 253253757 is 757352352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 253253757 - 2² = 253253753 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 (253253753) 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, 42208957 + ... + 42208962.

It is an arithmetic number, because the mean of its divisors is an integer number (84417920).

Almost surely, 2^253253757 is an apocalyptic number.

It is an amenable number.

253253757 is a deficient number, since it is larger than the sum of its proper divisors (84417923).

253253757 is an equidigital number, since it uses as much as digits as its factorization.

253253757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84417922.

The product of its digits is 220500, while the sum is 39.

The square root of 253253757 is about 15913.9485043782. The cubic root of 253253757 is about 632.6817379407.

The spelling of 253253757 in words is "two hundred fifty-three million, two hundred fifty-three thousand, seven hundred fifty-seven".