45005123 has 2 divisors, whose sum is σ = 45005124. Its totient is φ = 45005122.

The previous prime is 45005101. The next prime is 45005153. The reversal of 45005123 is 32150054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45005123 - 2⁸ = 45004867 is a prime.

It is a super-2 number, since 2×45005123² = 4050922192490258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45005095 and 45005104.

It is not a weakly prime, because it can be changed into another prime (45005153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22502561 + 22502562.

It is an arithmetic number, because the mean of its divisors is an integer number (22502562).

Almost surely, 2^45005123 is an apocalyptic number.

45005123 is a deficient number, since it is larger than the sum of its proper divisors (1).

45005123 is an equidigital number, since it uses as much as digits as its factorization.

45005123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 45005123 is about 6708.5857675072. The cubic root of 45005123 is about 355.7028276882.

Adding to 45005123 its reverse (32150054), we get a palindrome (77155177).

The spelling of 45005123 in words is "forty-five million, five thousand, one hundred twenty-three".