250997 has 4 divisors (see below), whose sum is σ = 252000. Its totient is φ = 249996.

The previous prime is 250993. The next prime is 251003. The reversal of 250997 is 799052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 250997 - 2² = 250993 is a prime.

It is a super-3 number, since 3×250997³ = 47438051993330919, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250993) 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 in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 750.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2²⁵⁰⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

250997 is a deficient number, since it is larger than the sum of its proper divisors (1003).

250997 is an equidigital number, since it uses as much as digits as its factorization.

250997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 250997 is about 500.9960079681. The cubic root of 250997 is about 63.0796841711.

The spelling of 250997 in words is "two hundred fifty thousand, nine hundred ninety-seven".