5221243766 has 4 divisors (see below), whose sum is σ = 7831865652. Its totient is φ = 2610621882.

The previous prime is 5221243759. The next prime is 5221243787. The reversal of 5221243766 is 6673421225.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×5221243766² = 54522772927987725512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305310940 + ... + 1305310943.

It is an arithmetic number, because the mean of its divisors is an integer number (1957966413).

Almost surely, 2^5221243766 is an apocalyptic number.

5221243766 is a deficient number, since it is larger than the sum of its proper divisors (2610621886).

5221243766 is a wasteful number, since it uses less digits than its factorization.

5221243766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610621885.

The product of its digits is 120960, while the sum is 38.

The square root of 5221243766 is about 72258.1743887846. The cubic root of 5221243766 is about 1734.8342591249.

The spelling of 5221243766 in words is "five billion, two hundred twenty-one million, two hundred forty-three thousand, seven hundred sixty-six".