253215347 has 32 divisors (see below), whose sum is σ = 333594624. Its totient is φ = 186429600.

The previous prime is 253215343. The next prime is 253215371. The reversal of 253215347 is 743512352.

It is not a de Polignac number, because 253215347 - 2² = 253215343 is a prime.

It is a super-4 number, since 4×253215347⁴ (a number of 35 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (253215343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101408 + ... + 103874.

It is an arithmetic number, because the mean of its divisors is an integer number (10424832).

Almost surely, 2^253215347 is an apocalyptic number.

253215347 is a deficient number, since it is larger than the sum of its proper divisors (80379277).

253215347 is a wasteful number, since it uses less digits than its factorization.

253215347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559.

The product of its digits is 25200, while the sum is 32.

The square root of 253215347 is about 15912.7416556670. The cubic root of 253215347 is about 632.6497508743.

Adding to 253215347 its reverse (743512352), we get a palindrome (996727699).

The spelling of 253215347 in words is "two hundred fifty-three million, two hundred fifteen thousand, three hundred forty-seven".