5283690721 has 3 divisors (see below), whose sum is σ = 5283763411. Its totient is φ = 5283618032.

The previous prime is 5283690707. The next prime is 5283690739. The reversal of 5283690721 is 1270963825.

The square root of 5283690721 is 72689.

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., 461777121 + 4821913600 = 21489^2 + 69440^2 .

It is not a de Polignac number, because 5283690721 - 2¹³ = 5283682529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5283690701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 36345 + ... + 109033.

Almost surely, 2^5283690721 is an apocalyptic number.

5283690721 is the 72689-th square number.

5283690721 is the 36345-th centered octagonal number.

It is an amenable number.

5283690721 is a deficient number, since it is larger than the sum of its proper divisors (72690).

5283690721 is an frugal number, since it uses more digits than its factorization.

5283690721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145378 (or 72689 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The cubic root of 5283690721 is about 1741.7231708333.

The spelling of 5283690721 in words is "five billion, two hundred eighty-three million, six hundred ninety thousand, seven hundred twenty-one".