541666157 has 2 divisors, whose sum is σ = 541666158. Its totient is φ = 541666156.

The previous prime is 541666067. The next prime is 541666159. The reversal of 541666157 is 751666145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460917961 + 80748196 = 21469^2 + 8986^2 .

It is a cyclic number.

It is not a de Polignac number, because 541666157 - 2²² = 537471853 is a prime.

Together with 541666159, 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 (541666159) 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, 270833078 + 270833079.

It is an arithmetic number, because the mean of its divisors is an integer number (270833079).

Almost surely, 2^541666157 is an apocalyptic number.

It is an amenable number.

541666157 is a deficient number, since it is larger than the sum of its proper divisors (1).

541666157 is an equidigital number, since it uses as much as digits as its factorization.

541666157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 541666157 is about 23273.7224568826. The cubic root of 541666157 is about 815.1619520831.

The spelling of 541666157 in words is "five hundred forty-one million, six hundred sixty-six thousand, one hundred fifty-seven".