45500123 has 2 divisors, whose sum is σ = 45500124. Its totient is φ = 45500122.

The previous prime is 45500111. The next prime is 45500167. The reversal of 45500123 is 32100554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45500123 - 2¹⁸ = 45237979 is a prime.

It is a super-2 number, since 2×45500123² = 4140522386030258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45500095 and 45500104.

It is not a weakly prime, because it can be changed into another prime (45500423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22750061 + 22750062.

It is an arithmetic number, because the mean of its divisors is an integer number (22750062).

Almost surely, 2^45500123 is an apocalyptic number.

45500123 is a deficient number, since it is larger than the sum of its proper divisors (1).

45500123 is an equidigital number, since it uses as much as digits as its factorization.

45500123 is an odious number, because the sum of its binary digits is odd.

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

The square root of 45500123 is about 6745.3778989765. The cubic root of 45500123 is about 357.0021707898.

Adding to 45500123 its reverse (32100554), we get a palindrome (77600677).

The spelling of 45500123 in words is "forty-five million, five hundred thousand, one hundred twenty-three".