2661260531 has 2 divisors, whose sum is σ = 2661260532. Its totient is φ = 2661260530.

The previous prime is 2661260521. The next prime is 2661260551. The reversal of 2661260531 is 1350621662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2661260531 - 2¹⁰ = 2661259507 is a prime.

It is a super-2 number, since 2×2661260531² = 14164615227716803922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2661260521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330630265 + 1330630266.

It is an arithmetic number, because the mean of its divisors is an integer number (1330630266).

Almost surely, 2^2661260531 is an apocalyptic number.

2661260531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661260531 is an equidigital number, since it uses as much as digits as its factorization.

2661260531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2661260531 is about 51587.4067093898. The cubic root of 2661260531 is about 1385.7848134462.

The spelling of 2661260531 in words is "two billion, six hundred sixty-one million, two hundred sixty thousand, five hundred thirty-one".