45409123 has 2 divisors, whose sum is σ = 45409124. Its totient is φ = 45409122.

The previous prime is 45409109. The next prime is 45409129. The reversal of 45409123 is 32190454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45409123 - 2²⁵ = 11854691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45409091 and 45409100.

It is not a weakly prime, because it can be changed into another prime (45409129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22704561 + 22704562.

It is an arithmetic number, because the mean of its divisors is an integer number (22704562).

Almost surely, 2^45409123 is an apocalyptic number.

45409123 is a deficient number, since it is larger than the sum of its proper divisors (1).

45409123 is an equidigital number, since it uses as much as digits as its factorization.

45409123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 45409123 is about 6738.6291632646. The cubic root of 45409123 is about 356.7640111427.

Adding to 45409123 its reverse (32190454), we get a palindrome (77599577).

The spelling of 45409123 in words is "forty-five million, four hundred nine thousand, one hundred twenty-three".