253145 has 8 divisors (see below), whose sum is σ = 306504. Its totient is φ = 200704.

The previous prime is 253133. The next prime is 253153. The reversal of 253145 is 541352.

It can be written as a sum of positive squares in 4 ways, for example, as 173056 + 80089 = 416^2 + 283^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 253145 - 2⁶ = 253081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253145.

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, 857 + ... + 1113.

It is an arithmetic number, because the mean of its divisors is an integer number (38313).

2²⁵³¹⁴⁵ is an apocalyptic number.

It is an amenable number.

253145 is a deficient number, since it is larger than the sum of its proper divisors (53359).

253145 is a wasteful number, since it uses less digits than its factorization.

253145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459.

The product of its digits is 600, while the sum is 20.

The square root of 253145 is about 503.1351707047. The cubic root of 253145 is about 63.2591158936.

Adding to 253145 its reverse (541352), we get a palindrome (794497).

The spelling of 253145 in words is "two hundred fifty-three thousand, one hundred forty-five".