7523813 has 4 divisors (see below), whose sum is σ = 8207808. Its totient is φ = 6839820.

The previous prime is 7523777. The next prime is 7523819. The reversal of 7523813 is 3183257.

7523813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7523813 - 2¹⁴ = 7507429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7523819) 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, 341981 + ... + 342002.

It is an arithmetic number, because the mean of its divisors is an integer number (2051952).

Almost surely, 2^7523813 is an apocalyptic number.

It is an amenable number.

7523813 is a deficient number, since it is larger than the sum of its proper divisors (683995).

7523813 is a wasteful number, since it uses less digits than its factorization.

7523813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683994.

The product of its digits is 5040, while the sum is 29.

The square root of 7523813 is about 2742.9569810699. The cubic root of 7523813 is about 195.9503292849.

The spelling of 7523813 in words is "seven million, five hundred twenty-three thousand, eight hundred thirteen".