253916945 has 8 divisors (see below), whose sum is σ = 308992320. Its totient is φ = 200272240.

The previous prime is 253916909. The next prime is 253916959. The reversal of 253916945 is 549619352.

253916945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253916945 - 2¹² = 253912849 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253916896 and 253916905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357275 + ... + 357984.

It is an arithmetic number, because the mean of its divisors is an integer number (38624040).

Almost surely, 2^253916945 is an apocalyptic number.

It is an amenable number.

253916945 is a deficient number, since it is larger than the sum of its proper divisors (55075375).

253916945 is an equidigital number, since it uses as much as digits as its factorization.

253916945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715335.

The product of its digits is 291600, while the sum is 44.

The square root of 253916945 is about 15934.7715703740. The cubic root of 253916945 is about 633.2335181262.

The spelling of 253916945 in words is "two hundred fifty-three million, nine hundred sixteen thousand, nine hundred forty-five".