7776541 has 2 divisors, whose sum is σ = 7776542. Its totient is φ = 7776540.

The previous prime is 7776473. The next prime is 7776551. The reversal of 7776541 is 1456777.

7776541 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6911641 + 864900 = 2629^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 7776541 - 2⁷ = 7776413 is a prime.

7776541 is a lucky number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7776541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7776551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888270 + 3888271.

It is an arithmetic number, because the mean of its divisors is an integer number (3888271).

Almost surely, 2^7776541 is an apocalyptic number.

It is an amenable number.

7776541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7776541 is an equidigital number, since it uses as much as digits as its factorization.

7776541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41160, while the sum is 37.

The square root of 7776541 is about 2788.6450114706. The cubic root of 7776541 is about 198.1202293298.

The spelling of 7776541 in words is "seven million, seven hundred seventy-six thousand, five hundred forty-one".