251454222 has 12 divisors (see below), whose sum is σ = 544817520. Its totient is φ = 83818068.

The previous prime is 251454221. The next prime is 251454223. The reversal of 251454222 is 222454152.

It is an interprime number because it is at equal distance from previous prime (251454221) and next prime (251454223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251454221) 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 5 ways as a sum of consecutive naturals, for example, 6984822 + ... + 6984857.

It is an arithmetic number, because the mean of its divisors is an integer number (45401460).

Almost surely, 2^251454222 is an apocalyptic number.

251454222 is an abundant number, since it is smaller than the sum of its proper divisors (293363298).

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

251454222 is a wasteful number, since it uses less digits than its factorization.

251454222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13969687 (or 13969684 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 251454222 is about 15857.3081574396. The cubic root of 251454222 is about 631.1796341263.

The spelling of 251454222 in words is "two hundred fifty-one million, four hundred fifty-four thousand, two hundred twenty-two".