45397109 has 2 divisors, whose sum is σ = 45397110. Its totient is φ = 45397108.

The previous prime is 45397091. The next prime is 45397111. The reversal of 45397109 is 90179354.

It is a happy number.

Together with previous prime (45397091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44488900 + 908209 = 6670^2 + 953^2 .

It is a cyclic number.

It is not a de Polignac number, because 45397109 - 2¹² = 45393013 is a prime.

It is a Sophie Germain prime.

Together with 45397111, it forms a pair of twin primes.

It is a Chen 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 (45397129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22698554 + 22698555.

It is an arithmetic number, because the mean of its divisors is an integer number (22698555).

Almost surely, 2^45397109 is an apocalyptic number.

It is an amenable number.

45397109 is a deficient number, since it is larger than the sum of its proper divisors (1).

45397109 is an equidigital number, since it uses as much as digits as its factorization.

45397109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 45397109 is about 6737.7376766983. The cubic root of 45397109 is about 356.7325450656.

The spelling of 45397109 in words is "forty-five million, three hundred ninety-seven thousand, one hundred nine".