545606291 has 2 divisors, whose sum is σ = 545606292. Its totient is φ = 545606290.

The previous prime is 545606273. The next prime is 545606339. The reversal of 545606291 is 192606545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545606291 - 2²² = 541411987 is a prime.

It is equal to p_28626851 and since 545606291 and 28626851 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (545606251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272803145 + 272803146.

It is an arithmetic number, because the mean of its divisors is an integer number (272803146).

Almost surely, 2^545606291 is an apocalyptic number.

545606291 is a deficient number, since it is larger than the sum of its proper divisors (1).

545606291 is an equidigital number, since it uses as much as digits as its factorization.

545606291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 545606291 is about 23358.2167769717. The cubic root of 545606291 is about 817.1337021698.

The spelling of 545606291 in words is "five hundred forty-five million, six hundred six thousand, two hundred ninety-one".