13013573 has 4 divisors (see below), whose sum is σ = 13096620. Its totient is φ = 12930528.

The previous prime is 13013549. The next prime is 13013593. The reversal of 13013573 is 37531031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37531031 = 41 ⋅915391.

It can be written as a sum of positive squares in 2 ways, for example, as 7171684 + 5841889 = 2678^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 13013573 - 2⁶ = 13013509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41288 + ... + 41601.

It is an arithmetic number, because the mean of its divisors is an integer number (3274155).

Almost surely, 2^13013573 is an apocalyptic number.

It is an amenable number.

13013573 is a deficient number, since it is larger than the sum of its proper divisors (83047).

13013573 is an equidigital number, since it uses as much as digits as its factorization.

13013573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83046.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 13013573 is about 3607.4330208612. The cubic root of 13013573 is about 235.2152727850.

The spelling of 13013573 in words is "thirteen million, thirteen thousand, five hundred seventy-three".