253534393 has 4 divisors (see below), whose sum is σ = 289753600. Its totient is φ = 217315188.

The previous prime is 253534363. The next prime is 253534417. The reversal of 253534393 is 393435352.

253534393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-253534393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253534343) 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, 18109593 + ... + 18109606.

It is an arithmetic number, because the mean of its divisors is an integer number (72438400).

Almost surely, 2^253534393 is an apocalyptic number.

It is an amenable number.

253534393 is a deficient number, since it is larger than the sum of its proper divisors (36219207).

253534393 is an equidigital number, since it uses as much as digits as its factorization.

253534393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36219206.

The product of its digits is 145800, while the sum is 37.

The square root of 253534393 is about 15922.7633594172. The cubic root of 253534393 is about 632.9153478071.

The spelling of 253534393 in words is "two hundred fifty-three million, five hundred thirty-four thousand, three hundred ninety-three".