545994511 has 4 divisors (see below), whose sum is σ = 546344512. Its totient is φ = 545644512.

The previous prime is 545994487. The next prime is 545994529. The reversal of 545994511 is 115499545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545994511 - 2²⁵ = 512440079 is a prime.

It is a super-2 number, since 2×545994511² = 596220012084258242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545994551) 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, 172650 + ... + 175783.

It is an arithmetic number, because the mean of its divisors is an integer number (136586128).

Almost surely, 2^545994511 is an apocalyptic number.

545994511 is a deficient number, since it is larger than the sum of its proper divisors (350001).

545994511 is a wasteful number, since it uses less digits than its factorization.

545994511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350000.

The product of its digits is 162000, while the sum is 43.

The square root of 545994511 is about 23366.5254370435. The cubic root of 545994511 is about 817.3274636427.

The spelling of 545994511 in words is "five hundred forty-five million, nine hundred ninety-four thousand, five hundred eleven".