45013523 has 2 divisors, whose sum is σ = 45013524. Its totient is φ = 45013522.

The previous prime is 45013517. The next prime is 45013559. The reversal of 45013523 is 32531054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45013523 - 2⁶ = 45013459 is a prime.

It is not a weakly prime, because it can be changed into another prime (45013123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22506761 + 22506762.

It is an arithmetic number, because the mean of its divisors is an integer number (22506762).

Almost surely, 2^45013523 is an apocalyptic number.

45013523 is a deficient number, since it is larger than the sum of its proper divisors (1).

45013523 is an equidigital number, since it uses as much as digits as its factorization.

45013523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 45013523 is about 6709.2118016947. The cubic root of 45013523 is about 355.7249564125.

Adding to 45013523 its reverse (32531054), we get a palindrome (77544577).

The spelling of 45013523 in words is "forty-five million, thirteen thousand, five hundred twenty-three".