383225581 has 2 divisors, whose sum is σ = 383225582. Its totient is φ = 383225580.

The previous prime is 383225569. The next prime is 383225593. The reversal of 383225581 is 185522383.

It is a balanced prime because it is at equal distance from previous prime (383225569) and next prime (383225593).

It can be written as a sum of positive squares in only one way, i.e., 273604681 + 109620900 = 16541^2 + 10470^2 .

It is a cyclic number.

It is not a de Polignac number, because 383225581 - 2¹⁵ = 383192813 is a prime.

It is a super-2 number, since 2×383225581² = 293723691865575122, 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 383225581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383225501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191612790 + 191612791.

It is an arithmetic number, because the mean of its divisors is an integer number (191612791).

Almost surely, 2^383225581 is an apocalyptic number.

It is an amenable number.

383225581 is a deficient number, since it is larger than the sum of its proper divisors (1).

383225581 is an equidigital number, since it uses as much as digits as its factorization.

383225581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The square root of 383225581 is about 19576.1482677262. The cubic root of 383225581 is about 726.3592927729.

The spelling of 383225581 in words is "three hundred eighty-three million, two hundred twenty-five thousand, five hundred eighty-one".