• 250987² = 62994474169 is an anagram of the next square 250988² = 62994976144.

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250987 has 4 divisors (see below), whose sum is σ = 273816. Its totient is φ = 228160.

The previous prime is 250979. The next prime is 250993. The reversal of 250987 is 789052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 250987 - 2³ = 250979 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a pancake number, because a pancake can be divided into 250987 parts by 708 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250967) 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, 11398 + ... + 11419.

It is an arithmetic number, because the mean of its divisors is an integer number (68454).

2²⁵⁰⁹⁸⁷ is an apocalyptic number.

250987 is a deficient number, since it is larger than the sum of its proper divisors (22829).

250987 is a wasteful number, since it uses less digits than its factorization.

250987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22828.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 250987 is about 500.9860277493. The cubic root of 250987 is about 63.0788464384.

The spelling of 250987 in words is "two hundred fifty thousand, nine hundred eighty-seven".