253990245 has 8 divisors (see below), whose sum is σ = 406384416. Its totient is φ = 135461456.

The previous prime is 253990211. The next prime is 253990249. The reversal of 253990245 is 542099352.

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

It is a cyclic number.

It is not a de Polignac number, because 253990245 - 2⁶ = 253990181 is a prime.

It is a super-2 number, since 2×253990245² = 129022089110320050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253990249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8466327 + ... + 8466356.

It is an arithmetic number, because the mean of its divisors is an integer number (50798052).

Almost surely, 2^253990245 is an apocalyptic number.

It is an amenable number.

253990245 is a deficient number, since it is larger than the sum of its proper divisors (152394171).

253990245 is a wasteful number, since it uses less digits than its factorization.

253990245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16932691.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 253990245 is about 15937.0714060018. The cubic root of 253990245 is about 633.2944455963.

The spelling of 253990245 in words is "two hundred fifty-three million, nine hundred ninety thousand, two hundred forty-five".