250523081 has 2 divisors, whose sum is σ = 250523082. Its totient is φ = 250523080.

The previous prime is 250523051. The next prime is 250523099. The reversal of 250523081 is 180325052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179694025 + 70829056 = 13405^2 + 8416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250523081 is a prime.

It is a super-2 number, since 2×250523081² = 125523628227465122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 250523081.

It is not a weakly prime, because it can be changed into another prime (250523051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125261540 + 125261541.

It is an arithmetic number, because the mean of its divisors is an integer number (125261541).

Almost surely, 2^250523081 is an apocalyptic number.

It is an amenable number.

250523081 is a deficient number, since it is larger than the sum of its proper divisors (1).

250523081 is an equidigital number, since it uses as much as digits as its factorization.

250523081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 250523081 is about 15827.9209310636. The cubic root of 250523081 is about 630.3995793834.

The spelling of 250523081 in words is "two hundred fifty million, five hundred twenty-three thousand, eighty-one".