45369221 has 2 divisors, whose sum is σ = 45369222. Its totient is φ = 45369220.

The previous prime is 45369217. The next prime is 45369227. The reversal of 45369221 is 12296354.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33189121 + 12180100 = 5761^2 + 3490^2 .

It is a cyclic number.

It is not a de Polignac number, because 45369221 - 2² = 45369217 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45369227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22684610 + 22684611.

It is an arithmetic number, because the mean of its divisors is an integer number (22684611).

Almost surely, 2^45369221 is an apocalyptic number.

It is an amenable number.

45369221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45369221 is an equidigital number, since it uses as much as digits as its factorization.

45369221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 45369221 is about 6735.6678213819. The cubic root of 45369221 is about 356.6594817120.

The spelling of 45369221 in words is "forty-five million, three hundred sixty-nine thousand, two hundred twenty-one".