5156622221 has 8 divisors (see below), whose sum is σ = 5343338880. Its totient is φ = 4972941792.

The previous prime is 5156622209. The next prime is 5156622259. The reversal of 5156622221 is 1222266515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5156622221 - 2⁶ = 5156622157 is a prime.

It is a super-2 number, since 2×5156622221² = 53181505460221945682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156622271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755600 + ... + 762393.

It is an arithmetic number, because the mean of its divisors is an integer number (667917360).

Almost surely, 2^5156622221 is an apocalyptic number.

It is an amenable number.

5156622221 is a deficient number, since it is larger than the sum of its proper divisors (186716659).

5156622221 is a wasteful number, since it uses less digits than its factorization.

5156622221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518115.

The product of its digits is 14400, while the sum is 32.

The square root of 5156622221 is about 71809.6248493195. The cubic root of 5156622221 is about 1727.6473774867.

Adding to 5156622221 its reverse (1222266515), we get a palindrome (6378888736).

The spelling of 5156622221 in words is "five billion, one hundred fifty-six million, six hundred twenty-two thousand, two hundred twenty-one".