5311622721 has 4 divisors (see below), whose sum is σ = 7082163632. Its totient is φ = 3541081812.

The previous prime is 5311622699. The next prime is 5311622731. The reversal of 5311622721 is 1272261135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5311622721 - 2¹⁴ = 5311606337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5311622731) 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, 885270451 + ... + 885270456.

It is an arithmetic number, because the mean of its divisors is an integer number (1770540908).

Almost surely, 2^5311622721 is an apocalyptic number.

It is an amenable number.

5311622721 is a deficient number, since it is larger than the sum of its proper divisors (1770540911).

5311622721 is a wasteful number, since it uses less digits than its factorization.

5311622721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770540910.

The product of its digits is 5040, while the sum is 30.

The square root of 5311622721 is about 72880.8803528058. The cubic root of 5311622721 is about 1744.7869594297.

Adding to 5311622721 its reverse (1272261135), we get a palindrome (6583883856).

The spelling of 5311622721 in words is "five billion, three hundred eleven million, six hundred twenty-two thousand, seven hundred twenty-one".