253345773 has 4 divisors (see below), whose sum is σ = 337794368. Its totient is φ = 168897180.

The previous prime is 253345751. The next prime is 253345783. The reversal of 253345773 is 377543352.

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 253345773 - 2²⁰ = 252297197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253345783) 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, 42224293 + ... + 42224298.

It is an arithmetic number, because the mean of its divisors is an integer number (84448592).

Almost surely, 2^253345773 is an apocalyptic number.

It is an amenable number.

253345773 is a deficient number, since it is larger than the sum of its proper divisors (84448595).

253345773 is an equidigital number, since it uses as much as digits as its factorization.

253345773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84448594.

The product of its digits is 264600, while the sum is 39.

The square root of 253345773 is about 15916.8392905124. The cubic root of 253345773 is about 632.7583538406.

The spelling of 253345773 in words is "two hundred fifty-three million, three hundred forty-five thousand, seven hundred seventy-three".