253138604 has 6 divisors (see below), whose sum is σ = 442992564. Its totient is φ = 126569300.

The previous prime is 253138597. The next prime is 253138609. The reversal of 253138604 is 406831352.

It is not an unprimeable number, because it can be changed into a prime (253138609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31642322 + ... + 31642329.

It is an arithmetic number, because the mean of its divisors is an integer number (73832094).

Almost surely, 2^253138604 is an apocalyptic number.

It is an amenable number.

253138604 is a deficient number, since it is larger than the sum of its proper divisors (189853960).

253138604 is a wasteful number, since it uses less digits than its factorization.

253138604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63284655 (or 63284653 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 253138604 is about 15910.3301034265. The cubic root of 253138604 is about 632.5858311762.

Adding to 253138604 its reverse (406831352), we get a palindrome (659969956).

The spelling of 253138604 in words is "two hundred fifty-three million, one hundred thirty-eight thousand, six hundred four".