2759881 has 2 divisors, whose sum is σ = 2759882. Its totient is φ = 2759880.

The previous prime is 2759879. The next prime is 2759891. The reversal of 2759881 is 1889572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 1121481 = 1280^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 2759881 - 2¹ = 2759879 is a prime.

It is a super-2 number, since 2×2759881² = 15233886268322, which contains 22 as substring.

Together with 2759879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2759821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1379940 + 1379941.

It is an arithmetic number, because the mean of its divisors is an integer number (1379941).

2^2759881 is an apocalyptic number.

It is an amenable number.

2759881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2759881 is an equidigital number, since it uses as much as digits as its factorization.

2759881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 40.

The square root of 2759881 is about 1661.2889574063. The cubic root of 2759881 is about 140.2695656606.

The spelling of 2759881 in words is "two million, seven hundred fifty-nine thousand, eight hundred eighty-one".