545945991001 has 2 divisors, whose sum is σ = 545945991002. Its totient is φ = 545945991000.

The previous prime is 545945990999. The next prime is 545945991011. The reversal of 545945991001 is 100199549545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403922531401 + 142023459600 = 635549^2 + 376860^2 .

It is a cyclic number.

It is not a de Polignac number, because 545945991001 - 2¹ = 545945990999 is a prime.

Together with 545945990999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 545945991001.

It is not a weakly prime, because it can be changed into another prime (545945991011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272972995500 + 272972995501.

It is an arithmetic number, because the mean of its divisors is an integer number (272972995501).

Almost surely, 2^545945991001 is an apocalyptic number.

It is an amenable number.

545945991001 is a deficient number, since it is larger than the sum of its proper divisors (1).

545945991001 is an equidigital number, since it uses as much as digits as its factorization.

545945991001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458000, while the sum is 52.

The spelling of 545945991001 in words is "five hundred forty-five billion, nine hundred forty-five million, nine hundred ninety-one thousand, one".