5544542191 has 2 divisors, whose sum is σ = 5544542192. Its totient is φ = 5544542190.

The previous prime is 5544542123. The next prime is 5544542279. The reversal of 5544542191 is 1912454455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5544542191 - 2²¹ = 5542445039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5544542111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2772271095 + 2772271096.

It is an arithmetic number, because the mean of its divisors is an integer number (2772271096).

Almost surely, 2^5544542191 is an apocalyptic number.

5544542191 is a deficient number, since it is larger than the sum of its proper divisors (1).

5544542191 is an equidigital number, since it uses as much as digits as its factorization.

5544542191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 40.

The square root of 5544542191 is about 74461.6827032535. The cubic root of 5544542191 is about 1769.9264964635.

The spelling of 5544542191 in words is "five billion, five hundred forty-four million, five hundred forty-two thousand, one hundred ninety-one".