250868997 has 6 divisors (see below), whose sum is σ = 362366342. Its totient is φ = 167245992.

The previous prime is 250868993. The next prime is 250869001. The reversal of 250868997 is 799868052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (250868993) and next prime (250869001).

It can be written as a sum of positive squares in only one way, i.e., 197374401 + 53494596 = 14049^2 + 7314^2 .

It is not a de Polignac number, because 250868997 - 2² = 250868993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250868993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13937158 + ... + 13937175.

Almost surely, 2^250868997 is an apocalyptic number.

It is an amenable number.

250868997 is a deficient number, since it is larger than the sum of its proper divisors (111497345).

250868997 is a wasteful number, since it uses less digits than its factorization.

250868997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27874339 (or 27874336 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 250868997 is about 15838.8445601313. The cubic root of 250868997 is about 630.6895925971.

The spelling of 250868997 in words is "two hundred fifty million, eight hundred sixty-eight thousand, nine hundred ninety-seven".