5156626221 has 12 divisors (see below), whose sum is σ = 7495904572. Its totient is φ = 3415853376.

The previous prime is 5156626187. The next prime is 5156626247. The reversal of 5156626221 is 1226266515.

5156626221 is a `hidden beast` number, since 5 + 1 + 5 + 6 + 626 + 2 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2261002500 + 2895623721 = 47550^2 + 53811^2 .

It is not a de Polignac number, because 5156626221 - 2⁶ = 5156626157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156626261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1823296 + ... + 1826121.

Almost surely, 2^5156626221 is an apocalyptic number.

It is an amenable number.

5156626221 is a deficient number, since it is larger than the sum of its proper divisors (2339278351).

5156626221 is a wasteful number, since it uses less digits than its factorization.

5156626221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649580 (or 3649577 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 5156626221 is about 71809.6527007338. The cubic root of 5156626221 is about 1727.6478241995.

The spelling of 5156626221 in words is "five billion, one hundred fifty-six million, six hundred twenty-six thousand, two hundred twenty-one".