250261 has 4 divisors (see below), whose sum is σ = 273024. Its totient is φ = 227500.

The previous prime is 250259. The next prime is 250267. The reversal of 250261 is 162052.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 250261 - 2¹ = 250259 is a prime.

It is a Duffinian number.

250261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11365 + ... + 11386.

It is an arithmetic number, because the mean of its divisors is an integer number (68256).

2²⁵⁰²⁶¹ is an apocalyptic number.

It is an amenable number.

250261 is a deficient number, since it is larger than the sum of its proper divisors (22763).

250261 is a wasteful number, since it uses less digits than its factorization.

250261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22762.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 250261 is about 500.2609319145. The cubic root of 250261 is about 63.0179674964.

Subtracting from 250261 its reverse (162052), we obtain a square (88209 = 297²).

The spelling of 250261 in words is "two hundred fifty thousand, two hundred sixty-one".