45192221 has 2 divisors, whose sum is σ = 45192222. Its totient is φ = 45192220.

The previous prime is 45192211. The next prime is 45192227. The reversal of 45192221 is 12229154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36132121 + 9060100 = 6011^2 + 3010^2 .

It is a cyclic number.

It is not a de Polignac number, because 45192221 - 2⁶ = 45192157 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 (45192227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22596110 + 22596111.

It is an arithmetic number, because the mean of its divisors is an integer number (22596111).

Almost surely, 2^45192221 is an apocalyptic number.

It is an amenable number.

45192221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45192221 is an equidigital number, since it uses as much as digits as its factorization.

45192221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 45192221 is about 6722.5159724615. The cubic root of 45192221 is about 356.1950625863.

The spelling of 45192221 in words is "forty-five million, one hundred ninety-two thousand, two hundred twenty-one".