253399357 has 4 divisors (see below), whose sum is σ = 253435680. Its totient is φ = 253363036.

The previous prime is 253399351. The next prime is 253399369. The reversal of 253399357 is 753993352.

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 a cyclic number.

It is not a de Polignac number, because 253399357 - 2¹⁹ = 252875069 is a prime.

It is a super-2 number, since 2×253399357² = 128422468256026898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253399351) 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, 4033 + ... + 22870.

It is an arithmetic number, because the mean of its divisors is an integer number (63358920).

Almost surely, 2^253399357 is an apocalyptic number.

It is an amenable number.

253399357 is a deficient number, since it is larger than the sum of its proper divisors (36323).

253399357 is an equidigital number, since it uses as much as digits as its factorization.

253399357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36322.

The product of its digits is 765450, while the sum is 46.

The square root of 253399357 is about 15918.5224502779. The cubic root of 253399357 is about 632.8029612995.

The spelling of 253399357 in words is "two hundred fifty-three million, three hundred ninety-nine thousand, three hundred fifty-seven".