5211721606 has 32 divisors (see below), whose sum is σ = 9697443840. Its totient is φ = 2045536416.

The previous prime is 5211721591. The next prime is 5211721607. The reversal of 5211721606 is 6061271125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211721607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89626 + ... + 135853.

It is an arithmetic number, because the mean of its divisors is an integer number (303045120).

Almost surely, 2^5211721606 is an apocalyptic number.

5211721606 is a deficient number, since it is larger than the sum of its proper divisors (4485722234).

5211721606 is a wasteful number, since it uses less digits than its factorization.

5211721606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225628.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 5211721606 is about 72192.2544737315. The cubic root of 5211721606 is about 1733.7789919237.

The spelling of 5211721606 in words is "five billion, two hundred eleven million, seven hundred twenty-one thousand, six hundred six".