253081 has 2 divisors, whose sum is σ = 253082. Its totient is φ = 253080.

The previous prime is 253063. The next prime is 253103. The reversal of 253081 is 180352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147456 + 105625 = 384^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 253081 - 2⁵ = 253049 is a prime.

It is a super-2 number, since 2×253081² = 128099985122, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (253381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126540 + 126541.

It is an arithmetic number, because the mean of its divisors is an integer number (126541).

2²⁵³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

253081 is a deficient number, since it is larger than the sum of its proper divisors (1).

253081 is an equidigital number, since it uses as much as digits as its factorization.

253081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 253081 is about 503.0715654855. The cubic root of 253081 is about 63.2537843976.

The spelling of 253081 in words is "two hundred fifty-three thousand, eighty-one".