545431811 has 2 divisors, whose sum is σ = 545431812. Its totient is φ = 545431810.

The previous prime is 545431807. The next prime is 545431819. The reversal of 545431811 is 118134545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545431811 - 2² = 545431807 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545431819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272715905 + 272715906.

It is an arithmetic number, because the mean of its divisors is an integer number (272715906).

Almost surely, 2^545431811 is an apocalyptic number.

545431811 is a deficient number, since it is larger than the sum of its proper divisors (1).

545431811 is an equidigital number, since it uses as much as digits as its factorization.

545431811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 32.

The square root of 545431811 is about 23354.4816041804. The cubic root of 545431811 is about 817.0465888726.

The spelling of 545431811 in words is "five hundred forty-five million, four hundred thirty-one thousand, eight hundred eleven".