7130549 has 4 divisors (see below), whose sum is σ = 7376460. Its totient is φ = 6884640.

The previous prime is 7130537. The next prime is 7130551. The reversal of 7130549 is 9450317.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1249924 + 5880625 = 1118^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 7130549 - 2⁴ = 7130533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 245881 = 7130549 / (7 + 1 + 3 + 0 + 5 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7130509) 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, 122912 + ... + 122969.

It is an arithmetic number, because the mean of its divisors is an integer number (1844115).

Almost surely, 2^7130549 is an apocalyptic number.

It is an amenable number.

7130549 is a deficient number, since it is larger than the sum of its proper divisors (245911).

7130549 is a wasteful number, since it uses less digits than its factorization.

7130549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245910.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 7130549 is about 2670.3087836428. The cubic root of 7130549 is about 192.4749975961.

The spelling of 7130549 in words is "seven million, one hundred thirty thousand, five hundred forty-nine".