45852221 has 2 divisors, whose sum is σ = 45852222. Its totient is φ = 45852220.

The previous prime is 45852211. The next prime is 45852223. The reversal of 45852221 is 12225854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45832900 + 19321 = 6770^2 + 139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45852221 is a prime.

Together with 45852223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45852223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22926110 + 22926111.

It is an arithmetic number, because the mean of its divisors is an integer number (22926111).

Almost surely, 2^45852221 is an apocalyptic number.

It is an amenable number.

45852221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45852221 is an equidigital number, since it uses as much as digits as its factorization.

45852221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6400, while the sum is 29.

The square root of 45852221 is about 6771.4268068111. The cubic root of 45852221 is about 357.9206803869.

The spelling of 45852221 in words is "forty-five million, eight hundred fifty-two thousand, two hundred twenty-one".