545421515291 has 2 divisors, whose sum is σ = 545421515292. Its totient is φ = 545421515290.

The previous prime is 545421515239. The next prime is 545421515293. The reversal of 545421515291 is 192515124545.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545421515291 is a prime.

Together with 545421515293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545421515293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272710757645 + 272710757646.

It is an arithmetic number, because the mean of its divisors is an integer number (272710757646).

Almost surely, 2^545421515291 is an apocalyptic number.

545421515291 is a deficient number, since it is larger than the sum of its proper divisors (1).

545421515291 is an equidigital number, since it uses as much as digits as its factorization.

545421515291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360000, while the sum is 44.

The spelling of 545421515291 in words is "five hundred forty-five billion, four hundred twenty-one million, five hundred fifteen thousand, two hundred ninety-one".