541456991 has 2 divisors, whose sum is σ = 541456992. Its totient is φ = 541456990.

The previous prime is 541456907. The next prime is 541457011. The reversal of 541456991 is 199654145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 541456991 - 2¹⁴ = 541440607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541456901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270728495 + 270728496.

It is an arithmetic number, because the mean of its divisors is an integer number (270728496).

Almost surely, 2^541456991 is an apocalyptic number.

541456991 is a deficient number, since it is larger than the sum of its proper divisors (1).

541456991 is an equidigital number, since it uses as much as digits as its factorization.

541456991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 541456991 is about 23269.2284143673. The cubic root of 541456991 is about 815.0570128357.

The spelling of 541456991 in words is "five hundred forty-one million, four hundred fifty-six thousand, nine hundred ninety-one".