3155530561 has 2 divisors, whose sum is σ = 3155530562. Its totient is φ = 3155530560.

The previous prime is 3155530559. The next prime is 3155530627. The reversal of 3155530561 is 1650355513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2811650625 + 343879936 = 53025^2 + 18544^2 .

It is a cyclic number.

It is not a de Polignac number, because 3155530561 - 2¹ = 3155530559 is a prime.

Together with 3155530559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3155530541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577765280 + 1577765281.

It is an arithmetic number, because the mean of its divisors is an integer number (1577765281).

Almost surely, 2^3155530561 is an apocalyptic number.

It is an amenable number.

3155530561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3155530561 is an equidigital number, since it uses as much as digits as its factorization.

3155530561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33750, while the sum is 34.

The square root of 3155530561 is about 56174.1093476345. The cubic root of 3155530561 is about 1466.7546156340.

The spelling of 3155530561 in words is "three billion, one hundred fifty-five million, five hundred thirty thousand, five hundred sixty-one".