2956535581 has 2 divisors, whose sum is σ = 2956535582. Its totient is φ = 2956535580.

The previous prime is 2956535557. The next prime is 2956535591. The reversal of 2956535581 is 1855356592.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1791405625 + 1165129956 = 42325^2 + 34134^2 .

It is a cyclic number.

It is not a de Polignac number, because 2956535581 - 2¹¹ = 2956533533 is a prime.

It is a super-2 number, since 2×2956535581² = 17482205283438015122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2956535591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1478267790 + 1478267791.

It is an arithmetic number, because the mean of its divisors is an integer number (1478267791).

Almost surely, 2^2956535581 is an apocalyptic number.

It is an amenable number.

2956535581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2956535581 is an equidigital number, since it uses as much as digits as its factorization.

2956535581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620000, while the sum is 49.

The square root of 2956535581 is about 54374.0340695814. The cubic root of 2956535581 is about 1435.2504883908.

The spelling of 2956535581 in words is "two billion, nine hundred fifty-six million, five hundred thirty-five thousand, five hundred eighty-one".