2756491 has 2 divisors, whose sum is σ = 2756492. Its totient is φ = 2756490.

The previous prime is 2756483. The next prime is 2756497. The reversal of 2756491 is 1946572.

2756491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2756491 - 2³ = 2756483 is a prime.

It is a super-4 number, since 4×2756491⁴ (a number of 27 digits) contains 4444 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2756497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378245 + 1378246.

It is an arithmetic number, because the mean of its divisors is an integer number (1378246).

2^2756491 is an apocalyptic number.

2756491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756491 is an equidigital number, since it uses as much as digits as its factorization.

2756491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 2756491 is about 1660.2683518034. The cubic root of 2756491 is about 140.2121104473.

The spelling of 2756491 in words is "two million, seven hundred fifty-six thousand, four hundred ninety-one".