251241 has 8 divisors (see below), whose sum is σ = 339360. Its totient is φ = 165312.

The previous prime is 251233. The next prime is 251257. The reversal of 251241 is 142152.

251241 = T₁₅₈ + T₁₅₉ + ... + T₁₇₅.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 251241 - 2³ = 251233 is a prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 251241.

It is not an unprimeable number, because it can be changed into a prime (251201) 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 7 ways as a sum of consecutive naturals, for example, 256 + ... + 753.

It is an arithmetic number, because the mean of its divisors is an integer number (42420).

2²⁵¹²⁴¹ is an apocalyptic number.

It is an amenable number.

251241 is a deficient number, since it is larger than the sum of its proper divisors (88119).

251241 is a wasteful number, since it uses less digits than its factorization.

251241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095.

The product of its digits is 80, while the sum is 15.

The square root of 251241 is about 501.2394637297. The cubic root of 251241 is about 63.1001179588.

Adding to 251241 its reverse (142152), we get a palindrome (393393).

The spelling of 251241 in words is "two hundred fifty-one thousand, two hundred forty-one".