251426 has 8 divisors (see below), whose sum is σ = 431040. Its totient is φ = 107748.

The previous prime is 251417. The next prime is 251429. The reversal of 251426 is 624152.

It is a happy number.

251426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 251398 and 251407.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 251426.

It is not an unprimeable number, because it can be changed into a prime (251429) 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, 8966 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (53880).

2²⁵¹⁴²⁶ is an apocalyptic number.

251426 is a deficient number, since it is larger than the sum of its proper divisors (179614).

251426 is a wasteful number, since it uses less digits than its factorization.

251426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17968.

The product of its digits is 480, while the sum is 20.

The square root of 251426 is about 501.4239723029. The cubic root of 251426 is about 63.1156019731.

Adding to 251426 its reverse (624152), we get a palindrome (875578).

The spelling of 251426 in words is "two hundred fifty-one thousand, four hundred twenty-six".