253515 has 8 divisors (see below), whose sum is σ = 405648. Its totient is φ = 135200.

The previous prime is 253507. The next prime is 253531. The reversal of 253515 is 515352.

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

It is not a de Polignac number, because 253515 - 2³ = 253507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253491 and 253500.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253515.

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, 8436 + ... + 8465.

It is an arithmetic number, because the mean of its divisors is an integer number (50706).

2²⁵³⁵¹⁵ is an apocalyptic number.

253515 is a deficient number, since it is larger than the sum of its proper divisors (152133).

253515 is a wasteful number, since it uses less digits than its factorization.

253515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16909.

The product of its digits is 750, while the sum is 21.

The square root of 253515 is about 503.5027308764. The cubic root of 253515 is about 63.2899210036.

Adding to 253515 its reverse (515352), we get a palindrome (768867).

It can be divided in two parts, 2535 and 15, that multiplied together give a square (38025 = 195²).

The spelling of 253515 in words is "two hundred fifty-three thousand, five hundred fifteen".