541635121 has 2 divisors, whose sum is σ = 541635122. Its totient is φ = 541635120.

The previous prime is 541635091. The next prime is 541635137. The reversal of 541635121 is 121536145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478034496 + 63600625 = 21864^2 + 7975^2 .

It is a cyclic number.

It is not a de Polignac number, because 541635121 - 2⁷ = 541634993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 541635121.

It is not a weakly prime, because it can be changed into another prime (541635161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270817560 + 270817561.

It is an arithmetic number, because the mean of its divisors is an integer number (270817561).

Almost surely, 2^541635121 is an apocalyptic number.

It is an amenable number.

541635121 is a deficient number, since it is larger than the sum of its proper divisors (1).

541635121 is an equidigital number, since it uses as much as digits as its factorization.

541635121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 541635121 is about 23273.0556867808. The cubic root of 541635121 is about 815.1463829302.

The spelling of 541635121 in words is "five hundred forty-one million, six hundred thirty-five thousand, one hundred twenty-one".