253142216 has 8 divisors (see below), whose sum is σ = 474641670. Its totient is φ = 126571104.

The previous prime is 253142203. The next prime is 253142221. The reversal of 253142216 is 612241352.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 249324100 + 3818116 = 15790^2 + 1954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15821381 + ... + 15821396.

Almost surely, 2^253142216 is an apocalyptic number.

It is an amenable number.

253142216 is a deficient number, since it is larger than the sum of its proper divisors (221499454).

253142216 is a wasteful number, since it uses less digits than its factorization.

253142216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31642783 (or 31642779 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 253142216 is about 15910.4436141800. The cubic root of 253142216 is about 632.5888399221.

Adding to 253142216 its reverse (612241352), we get a palindrome (865383568).

The spelling of 253142216 in words is "two hundred fifty-three million, one hundred forty-two thousand, two hundred sixteen".