45332281 has 2 divisors, whose sum is σ = 45332282. Its totient is φ = 45332280.

The previous prime is 45332279. The next prime is 45332297. The reversal of 45332281 is 18223354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40960000 + 4372281 = 6400^2 + 2091^2 .

It is a cyclic number.

It is not a de Polignac number, because 45332281 - 2¹ = 45332279 is a prime.

It is a super-2 number, since 2×45332281² = 4110031401325922, which contains 22 as substring.

Together with 45332279, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45332201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22666140 + 22666141.

It is an arithmetic number, because the mean of its divisors is an integer number (22666141).

Almost surely, 2^45332281 is an apocalyptic number.

It is an amenable number.

45332281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45332281 is an equidigital number, since it uses as much as digits as its factorization.

45332281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 45332281 is about 6732.9251443930. The cubic root of 45332281 is about 356.5626570490.

The spelling of 45332281 in words is "forty-five million, three hundred thirty-two thousand, two hundred eighty-one".