45182231 has 2 divisors, whose sum is σ = 45182232. Its totient is φ = 45182230.

The previous prime is 45182213. The next prime is 45182257. The reversal of 45182231 is 13228154.

Together with previous prime (45182213) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (45182257) can be obtained adding 45182231 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45182231 - 2¹⁰ = 45181207 is a prime.

It is a super-2 number, since 2×45182231² = 4082867996274722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45182231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45181231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22591115 + 22591116.

It is an arithmetic number, because the mean of its divisors is an integer number (22591116).

Almost surely, 2^45182231 is an apocalyptic number.

45182231 is a deficient number, since it is larger than the sum of its proper divisors (1).

45182231 is an equidigital number, since it uses as much as digits as its factorization.

45182231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 26.

The square root of 45182231 is about 6721.7729060122. The cubic root of 45182231 is about 356.1688143307.

The spelling of 45182231 in words is "forty-five million, one hundred eighty-two thousand, two hundred thirty-one".