549487523243 has 2 divisors, whose sum is σ = 549487523244. Its totient is φ = 549487523242.

The previous prime is 549487523147. The next prime is 549487523281. The reversal of 549487523243 is 342325784945.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549487523243 is a prime.

It is not a weakly prime, because it can be changed into another prime (549487523843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274743761621 + 274743761622.

It is an arithmetic number, because the mean of its divisors is an integer number (274743761622).

Almost surely, 2^549487523243 is an apocalyptic number.

549487523243 is a deficient number, since it is larger than the sum of its proper divisors (1).

549487523243 is an equidigital number, since it uses as much as digits as its factorization.

549487523243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 56.

The spelling of 549487523243 in words is "five hundred forty-nine billion, four hundred eighty-seven million, five hundred twenty-three thousand, two hundred forty-three".