45000023 has 2 divisors, whose sum is σ = 45000024. Its totient is φ = 45000022.

The previous prime is 45000019. The next prime is 45000031. The reversal of 45000023 is 32000054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45000023 - 2² = 45000019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44999971 and 45000007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44000023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22500011 + 22500012.

It is an arithmetic number, because the mean of its divisors is an integer number (22500012).

Almost surely, 2^45000023 is an apocalyptic number.

45000023 is a deficient number, since it is larger than the sum of its proper divisors (1).

45000023 is an equidigital number, since it uses as much as digits as its factorization.

45000023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 45000023 is about 6708.2056468179. The cubic root of 45000023 is about 355.6893910479.

Adding to 45000023 its reverse (32000054), we get a palindrome (77000077).

The spelling of 45000023 in words is "forty-five million, twenty-three", and thus it is an aban number and an uban number.