251075226 has 16 divisors (see below), whose sum is σ = 514398528. Its totient is φ = 81650400.

The previous prime is 251075221. The next prime is 251075239. The reversal of 251075226 is 622570152.

It is a super-2 number, since 2×251075226² = 126077538221902152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251075193 and 251075202.

It is not an unprimeable number, because it can be changed into a prime (251075221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510070 + ... + 510561.

It is an arithmetic number, because the mean of its divisors is an integer number (32149908).

Almost surely, 2^251075226 is an apocalyptic number.

251075226 is an abundant number, since it is smaller than the sum of its proper divisors (263323302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251075226 is a wasteful number, since it uses less digits than its factorization.

251075226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020677.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 251075226 is about 15845.3534514065. The cubic root of 251075226 is about 630.8623665164.

The spelling of 251075226 in words is "two hundred fifty-one million, seventy-five thousand, two hundred twenty-six".