549832091 has 2 divisors, whose sum is σ = 549832092. Its totient is φ = 549832090.

The previous prime is 549832061. The next prime is 549832109. The reversal of 549832091 is 190238945.

Together with next prime (549832109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549832091 - 2²² = 545637787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (549832001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274916045 + 274916046.

It is an arithmetic number, because the mean of its divisors is an integer number (274916046).

Almost surely, 2^549832091 is an apocalyptic number.

549832091 is a deficient number, since it is larger than the sum of its proper divisors (1).

549832091 is an equidigital number, since it uses as much as digits as its factorization.

549832091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 549832091 is about 23448.4986939463. The cubic root of 549832091 is about 819.2378854993.

The spelling of 549832091 in words is "five hundred forty-nine million, eight hundred thirty-two thousand, ninety-one".