251248226 has 16 divisors (see below), whose sum is σ = 386352384. Its totient is φ = 122475024.

The previous prime is 251248223. The next prime is 251248243. The reversal of 251248226 is 622842152.

It is a junction number, because it is equal to n+sod(n) for n = 251248192 and 251248201.

It is not an unprimeable number, because it can be changed into a prime (251248223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49796 + ... + 54608.

It is an arithmetic number, because the mean of its divisors is an integer number (24147024).

Almost surely, 2^251248226 is an apocalyptic number.

251248226 is a deficient number, since it is larger than the sum of its proper divisors (135104158).

251248226 is a wasteful number, since it uses less digits than its factorization.

251248226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465.

The product of its digits is 15360, while the sum is 32.

The square root of 251248226 is about 15850.8115249662. The cubic root of 251248226 is about 631.0072289862.

The spelling of 251248226 in words is "two hundred fifty-one million, two hundred forty-eight thousand, two hundred twenty-six".