45247109 has 2 divisors, whose sum is σ = 45247110. Its totient is φ = 45247108.

The previous prime is 45247057. The next prime is 45247129. The reversal of 45247109 is 90174254.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 1555009 = 6610^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 45247109 - 2¹² = 45243013 is a prime.

It is a super-3 number, since 3×45247109³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45247129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22623554 + 22623555.

It is an arithmetic number, because the mean of its divisors is an integer number (22623555).

Almost surely, 2^45247109 is an apocalyptic number.

It is an amenable number.

45247109 is a deficient number, since it is larger than the sum of its proper divisors (1).

45247109 is an equidigital number, since it uses as much as digits as its factorization.

45247109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 45247109 is about 6726.5971337668. The cubic root of 45247109 is about 356.3392092585.

The spelling of 45247109 in words is "forty-five million, two hundred forty-seven thousand, one hundred nine".