545645611 has 4 divisors (see below), whose sum is σ = 623594992. Its totient is φ = 467696232.

The previous prime is 545645609. The next prime is 545645641. The reversal of 545645611 is 116546545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116546545 = 5 ⋅23309309.

It is a cyclic number.

It is not a de Polignac number, because 545645611 - 2¹ = 545645609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545645641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38974680 + ... + 38974693.

It is an arithmetic number, because the mean of its divisors is an integer number (155898748).

Almost surely, 2^545645611 is an apocalyptic number.

545645611 is a deficient number, since it is larger than the sum of its proper divisors (77949381).

545645611 is an equidigital number, since it uses as much as digits as its factorization.

545645611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77949380.

The product of its digits is 72000, while the sum is 37.

The square root of 545645611 is about 23359.0584356476. The cubic root of 545645611 is about 817.1533310523.

The spelling of 545645611 in words is "five hundred forty-five million, six hundred forty-five thousand, six hundred eleven".