45072523 has 2 divisors, whose sum is σ = 45072524. Its totient is φ = 45072522.

The previous prime is 45072499. The next prime is 45072553. The reversal of 45072523 is 32527054.

45072523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45072523 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 45072491 and 45072500.

It is not a weakly prime, because it can be changed into another prime (45072553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22536261 + 22536262.

It is an arithmetic number, because the mean of its divisors is an integer number (22536262).

Almost surely, 2^45072523 is an apocalyptic number.

45072523 is a deficient number, since it is larger than the sum of its proper divisors (1).

45072523 is an equidigital number, since it uses as much as digits as its factorization.

45072523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 45072523 is about 6713.6073015928. The cubic root of 45072523 is about 355.8803068348.

Adding to 45072523 its reverse (32527054), we get a palindrome (77599577).

The spelling of 45072523 in words is "forty-five million, seventy-two thousand, five hundred twenty-three".