7245109 has 4 divisors (see below), whose sum is σ = 7252204. Its totient is φ = 7238016.

The previous prime is 7245071. The next prime is 7245127. The reversal of 7245109 is 9015427.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9015427 = 73 ⋅123499.

It can be written as a sum of positive squares in 2 ways, for example, as 6265009 + 980100 = 2503^2 + 990^2 .

It is a cyclic number.

It is not a de Polignac number, because 7245109 - 2¹⁵ = 7212341 is a prime.

It is a Duffinian number.

7245109 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7245209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1692 + ... + 4165.

It is an arithmetic number, because the mean of its divisors is an integer number (1813051).

Almost surely, 2^7245109 is an apocalyptic number.

It is an amenable number.

7245109 is a deficient number, since it is larger than the sum of its proper divisors (7095).

7245109 is a wasteful number, since it uses less digits than its factorization.

7245109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 7245109 is about 2691.6740144379. The cubic root of 7245109 is about 193.5002993494.

The spelling of 7245109 in words is "seven million, two hundred forty-five thousand, one hundred nine".