253142215 has 4 divisors (see below), whose sum is σ = 303770664. Its totient is φ = 202513768.

The previous prime is 253142203. The next prime is 253142221. The reversal of 253142215 is 512241352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253142215 - 2¹³ = 253134023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253142215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25314217 + ... + 25314226.

It is an arithmetic number, because the mean of its divisors is an integer number (75942666).

Almost surely, 2^253142215 is an apocalyptic number.

253142215 is a deficient number, since it is larger than the sum of its proper divisors (50628449).

253142215 is an equidigital number, since it uses as much as digits as its factorization.

253142215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50628448.

The product of its digits is 2400, while the sum is 25.

The square root of 253142215 is about 15910.4435827541. The cubic root of 253142215 is about 632.5888390891.

Adding to 253142215 its reverse (512241352), we get a palindrome (765383567).

The spelling of 253142215 in words is "two hundred fifty-three million, one hundred forty-two thousand, two hundred fifteen".