541630091 has 2 divisors, whose sum is σ = 541630092. Its totient is φ = 541630090.

The previous prime is 541630079. The next prime is 541630127. The reversal of 541630091 is 190036145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 541630091 - 2¹⁸ = 541367947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (541630031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270815045 + 270815046.

It is an arithmetic number, because the mean of its divisors is an integer number (270815046).

Almost surely, 2^541630091 is an apocalyptic number.

541630091 is a deficient number, since it is larger than the sum of its proper divisors (1).

541630091 is an equidigital number, since it uses as much as digits as its factorization.

541630091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 541630091 is about 23272.9476216486. The cubic root of 541630091 is about 815.1438595839.

The spelling of 541630091 in words is "five hundred forty-one million, six hundred thirty thousand, ninety-one".