7245813 has 4 divisors (see below), whose sum is σ = 9661088. Its totient is φ = 4830540.

The previous prime is 7245809. The next prime is 7245829. The reversal of 7245813 is 3185427.

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 not a de Polignac number, because 7245813 - 2² = 7245809 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 (7245863) 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, 1207633 + ... + 1207638.

It is an arithmetic number, because the mean of its divisors is an integer number (2415272).

Almost surely, 2^7245813 is an apocalyptic number.

It is an amenable number.

7245813 is a deficient number, since it is larger than the sum of its proper divisors (2415275).

7245813 is a wasteful number, since it uses less digits than its factorization.

7245813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415274.

The product of its digits is 6720, while the sum is 30.

The square root of 7245813 is about 2691.8047848980. The cubic root of 7245813 is about 193.5065665567.

The spelling of 7245813 in words is "seven million, two hundred forty-five thousand, eight hundred thirteen".