541129661 has 2 divisors, whose sum is σ = 541129662. Its totient is φ = 541129660.

The previous prime is 541129649. The next prime is 541129663. The reversal of 541129661 is 166921145.

541129661 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 can be written as a sum of positive squares in only one way, i.e., 536848900 + 4280761 = 23170^2 + 2069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541129661 is a prime.

Together with 541129663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541129663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270564830 + 270564831.

It is an arithmetic number, because the mean of its divisors is an integer number (270564831).

Almost surely, 2^541129661 is an apocalyptic number.

It is an amenable number.

541129661 is a deficient number, since it is larger than the sum of its proper divisors (1).

541129661 is an equidigital number, since it uses as much as digits as its factorization.

541129661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 541129661 is about 23262.1938131381. The cubic root of 541129661 is about 814.8927360810.

The spelling of 541129661 in words is "five hundred forty-one million, one hundred twenty-nine thousand, six hundred sixty-one".