5091250609 has 3 divisors (see below), whose sum is σ = 5091321963. Its totient is φ = 5091179256.

The previous prime is 5091250601. The next prime is 5091250663. The reversal of 5091250609 is 9060521905.

The square root of 5091250609 is 71353.

It is a perfect power (a square), and thus also a powerful 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.

It can be written as a sum of positive squares in only one way, i.e., 5073000625 + 18249984 = 71225^2 + 4272^2 .

It is not a de Polignac number, because 5091250609 - 2³ = 5091250601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5091250601) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 35677 + ... + 107029.

It is an arithmetic number, because the mean of its divisors is an integer number (1697107321).

Almost surely, 2^5091250609 is an apocalyptic number.

5091250609 is the 71353-rd square number.

5091250609 is the 35677-th centered octagonal number.

It is an amenable number.

5091250609 is a deficient number, since it is larger than the sum of its proper divisors (71354).

5091250609 is an frugal number, since it uses more digits than its factorization.

5091250609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142706 (or 71353 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The cubic root of 5091250609 is about 1720.3157218562.

The spelling of 5091250609 in words is "five billion, ninety-one million, two hundred fifty thousand, six hundred nine".