613522523 has 4 divisors (see below), whose sum is σ = 619151280. Its totient is φ = 607893768.

The previous prime is 613522517. The next prime is 613522561. The reversal of 613522523 is 325225316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613522523 - 2⁸ = 613522267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613522583) 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, 2814215 + ... + 2814432.

It is an arithmetic number, because the mean of its divisors is an integer number (154787820).

Almost surely, 2^613522523 is an apocalyptic number.

613522523 is a deficient number, since it is larger than the sum of its proper divisors (5628757).

613522523 is a wasteful number, since it uses less digits than its factorization.

613522523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628756.

The product of its digits is 10800, while the sum is 29.

The square root of 613522523 is about 24769.3868111425. The cubic root of 613522523 is about 849.7219496544.

Adding to 613522523 its reverse (325225316), we get a palindrome (938747839).

The spelling of 613522523 in words is "six hundred thirteen million, five hundred twenty-two thousand, five hundred twenty-three".