5542531991 has 2 divisors, whose sum is σ = 5542531992. Its totient is φ = 5542531990.

The previous prime is 5542531979. The next prime is 5542532087. The reversal of 5542531991 is 1991352455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5542531991 - 2³⁰ = 4468790167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5542533991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2771265995 + 2771265996.

It is an arithmetic number, because the mean of its divisors is an integer number (2771265996).

Almost surely, 2^5542531991 is an apocalyptic number.

5542531991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5542531991 is an equidigital number, since it uses as much as digits as its factorization.

5542531991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 44.

The square root of 5542531991 is about 74448.1832619171. The cubic root of 5542531991 is about 1769.7125722004.

The spelling of 5542531991 in words is "five billion, five hundred forty-two million, five hundred thirty-one thousand, nine hundred ninety-one".