5211973636 has 9 divisors (see below), whose sum is σ = 9121206549. Its totient is φ = 2605914624.

The previous prime is 5211973633. The next prime is 5211973681. The reversal of 5211973636 is 6363791125.

The square root of 5211973636 is 72194.

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

It can be written as a sum of positive squares in only one way, i.e., 836944900 + 4375028736 = 28930^2 + 66144^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5211973592 and 5211973601.

It is not an unprimeable number, because it can be changed into a prime (5211973633) 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, 126340 + ... + 162436.

Almost surely, 2^5211973636 is an apocalyptic number.

5211973636 is the 72194-th square number.

It is an amenable number.

5211973636 is a deficient number, since it is larger than the sum of its proper divisors (3909232913).

5211973636 is an frugal number, since it uses more digits than its factorization.

5211973636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72198 (or 36099 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The cubic root of 5211973636 is about 1733.8069390084.

The spelling of 5211973636 in words is "five billion, two hundred eleven million, nine hundred seventy-three thousand, six hundred thirty-six".