253082138 has 8 divisors (see below), whose sum is σ = 379690740. Its totient is φ = 126518560.

The previous prime is 253082083. The next prime is 253082143. The reversal of 253082138 is 831280352.

It can be written as a sum of positive squares in 2 ways, for example, as 181899169 + 71182969 = 13487^2 + 8437^2 .

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

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, 15968 + ... + 27588.

Almost surely, 2^253082138 is an apocalyptic number.

253082138 is a deficient number, since it is larger than the sum of its proper divisors (126608602).

253082138 is a wasteful number, since it uses less digits than its factorization.

253082138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22512.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 253082138 is about 15908.5554969645. Note that the first 3 decimals coincide. The cubic root of 253082138 is about 632.5387920611.

The spelling of 253082138 in words is "two hundred fifty-three million, eighty-two thousand, one hundred thirty-eight".