253890017 has 4 divisors (see below), whose sum is σ = 259794480. Its totient is φ = 247985556.

The previous prime is 253889959. The next prime is 253890029. The reversal of 253890017 is 710098352.

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 253890017 - 2¹⁰ = 253888993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253890037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2952167 + ... + 2952252.

It is an arithmetic number, because the mean of its divisors is an integer number (64948620).

Almost surely, 2^253890017 is an apocalyptic number.

It is an amenable number.

253890017 is a deficient number, since it is larger than the sum of its proper divisors (5904463).

253890017 is an equidigital number, since it uses as much as digits as its factorization.

253890017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5904462.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 253890017 is about 15933.9266033204. The cubic root of 253890017 is about 633.2111324402.

The spelling of 253890017 in words is "two hundred fifty-three million, eight hundred ninety thousand, seventeen".