545811907 has 2 divisors, whose sum is σ = 545811908. Its totient is φ = 545811906.

The previous prime is 545811899. The next prime is 545811953. The reversal of 545811907 is 709118545.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545811907 - 2³ = 545811899 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545811907.

It is not a weakly prime, because it can be changed into another prime (545811977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272905953 + 272905954.

It is an arithmetic number, because the mean of its divisors is an integer number (272905954).

Almost surely, 2^545811907 is an apocalyptic number.

545811907 is a deficient number, since it is larger than the sum of its proper divisors (1).

545811907 is an equidigital number, since it uses as much as digits as its factorization.

545811907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 545811907 is about 23362.6177257601. The cubic root of 545811907 is about 817.2363370212.

The spelling of 545811907 in words is "five hundred forty-five million, eight hundred eleven thousand, nine hundred seven".