5902031221 has 4 divisors (see below), whose sum is σ = 6045983244. Its totient is φ = 5758079200.

The previous prime is 5902031203. The next prime is 5902031231. The reversal of 5902031221 is 1221302095.

It is a happy number.

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 2383880625 + 3518150596 = 48825^2 + 59314^2 .

It is a cyclic number.

It is not a de Polignac number, because 5902031221 - 2⁵ = 5902031189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5902031231) 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, 71975950 + ... + 71976031.

It is an arithmetic number, because the mean of its divisors is an integer number (1511495811).

Almost surely, 2^5902031221 is an apocalyptic number.

It is an amenable number.

5902031221 is a deficient number, since it is larger than the sum of its proper divisors (143952023).

5902031221 is a wasteful number, since it uses less digits than its factorization.

5902031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143952022.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 5902031221 is about 76824.6784633688. The cubic root of 5902031221 is about 1807.1762101116.

The spelling of 5902031221 in words is "five billion, nine hundred two million, thirty-one thousand, two hundred twenty-one".