5643892521 has 12 divisors (see below), whose sum is σ = 8158832500. Its totient is φ = 3759575040.

The previous prime is 5643892439. The next prime is 5643892571. The reversal of 5643892521 is 1252983465.

5643892521 is a `hidden beast` number, since 5 + 6 + 4 + 38 + 92 + 521 = 666.

5643892521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3287760921 + 2356131600 = 57339^2 + 48540^2 .

It is not a de Polignac number, because 5643892521 - 2¹⁰ = 5643891497 is a prime.

It is a super-3 number, since 3×5643892521³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5643892571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239800 + ... + 262281.

Almost surely, 2^5643892521 is an apocalyptic number.

It is an amenable number.

5643892521 is a deficient number, since it is larger than the sum of its proper divisors (2514939979).

5643892521 is a wasteful number, since it uses less digits than its factorization.

5643892521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503336 (or 503333 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 5643892521 is about 75125.8445609765. The cubic root of 5643892521 is about 1780.4354993198.

The spelling of 5643892521 in words is "five billion, six hundred forty-three million, eight hundred ninety-two thousand, five hundred twenty-one".