45689221 has 2 divisors, whose sum is σ = 45689222. Its totient is φ = 45689220.

The previous prime is 45689209. The next prime is 45689309. The reversal of 45689221 is 12298654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44076321 + 1612900 = 6639^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 45689221 - 2¹³ = 45681029 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 (45689821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22844610 + 22844611.

It is an arithmetic number, because the mean of its divisors is an integer number (22844611).

Almost surely, 2^45689221 is an apocalyptic number.

It is an amenable number.

45689221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45689221 is an equidigital number, since it uses as much as digits as its factorization.

45689221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 45689221 is about 6759.3802230678. The cubic root of 45689221 is about 357.4960529011.

The spelling of 45689221 in words is "forty-five million, six hundred eighty-nine thousand, two hundred twenty-one".