121546541 has 2 divisors, whose sum is σ = 121546542. Its totient is φ = 121546540.

The previous prime is 121546507. The next prime is 121546561. The reversal of 121546541 is 145645121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121462441 + 84100 = 11021^2 + 290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121546541 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121546501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60773270 + 60773271.

It is an arithmetic number, because the mean of its divisors is an integer number (60773271).

Almost surely, 2^121546541 is an apocalyptic number.

It is an amenable number.

121546541 is a deficient number, since it is larger than the sum of its proper divisors (1).

121546541 is an equidigital number, since it uses as much as digits as its factorization.

121546541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 121546541 is about 11024.8147830247. The cubic root of 121546541 is about 495.3523200002.

The spelling of 121546541 in words is "one hundred twenty-one million, five hundred forty-six thousand, five hundred forty-one".