253447137 has 20 divisors (see below), whose sum is σ = 398535280. Its totient is φ = 160070904.

The previous prime is 253447121. The next prime is 253447147. The reversal of 253447137 is 731744352.

It is not a de Polignac number, because 253447137 - 2⁴ = 253447121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253447147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80803 + ... + 83880.

It is an arithmetic number, because the mean of its divisors is an integer number (19926764).

Almost surely, 2^253447137 is an apocalyptic number.

253447137 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

253447137 is a deficient number, since it is larger than the sum of its proper divisors (145088143).

253447137 is a wasteful number, since it uses less digits than its factorization.

253447137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164714 (or 164705 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 253447137 is about 15920.0231469681. The cubic root of 253447137 is about 632.8427317573.

The spelling of 253447137 in words is "two hundred fifty-three million, four hundred forty-seven thousand, one hundred thirty-seven".