541155521 has 2 divisors, whose sum is σ = 541155522. Its totient is φ = 541155520.

The previous prime is 541155469. The next prime is 541155533. The reversal of 541155521 is 125551145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388287025 + 152868496 = 19705^2 + 12364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541155521 is a prime.

It is not a weakly prime, because it can be changed into another prime (541155581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270577760 + 270577761.

It is an arithmetic number, because the mean of its divisors is an integer number (270577761).

Almost surely, 2^541155521 is an apocalyptic number.

It is an amenable number.

541155521 is a deficient number, since it is larger than the sum of its proper divisors (1).

541155521 is an equidigital number, since it uses as much as digits as its factorization.

541155521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000, while the sum is 29.

The square root of 541155521 is about 23262.7496440124. The cubic root of 541155521 is about 814.9057168211.

The spelling of 541155521 in words is "five hundred forty-one million, one hundred fifty-five thousand, five hundred twenty-one".