3563979521 has 2 divisors, whose sum is σ = 3563979522. Its totient is φ = 3563979520.

The previous prime is 3563979509. The next prime is 3563979619. The reversal of 3563979521 is 1259793653.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3500378896 + 63600625 = 59164^2 + 7975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3563979521 is a prime.

It is a super-2 number, since 2×3563979521² = 25403900052214778882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3563979521.

It is not a weakly prime, because it can be changed into another prime (3563909521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1781989760 + 1781989761.

It is an arithmetic number, because the mean of its divisors is an integer number (1781989761).

Almost surely, 2^3563979521 is an apocalyptic number.

It is an amenable number.

3563979521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3563979521 is an equidigital number, since it uses as much as digits as its factorization.

3563979521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1530900, while the sum is 50.

The square root of 3563979521 is about 59699.0747080723. The cubic root of 3563979521 is about 1527.4900851974.

The spelling of 3563979521 in words is "three billion, five hundred sixty-three million, nine hundred seventy-nine thousand, five hundred twenty-one".