545311511 has 4 divisors (see below), whose sum is σ = 545509272. Its totient is φ = 545113752.

The previous prime is 545311477. The next prime is 545311523. The reversal of 545311511 is 115113545.

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 545311511 - 2¹⁰ = 545310487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545331511) 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 in 3 ways as a sum of consecutive naturals, for example, 94685 + ... + 100278.

It is an arithmetic number, because the mean of its divisors is an integer number (136377318).

Almost surely, 2^545311511 is an apocalyptic number.

545311511 is a deficient number, since it is larger than the sum of its proper divisors (197761).

545311511 is a wasteful number, since it uses less digits than its factorization.

545311511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197760.

The product of its digits is 1500, while the sum is 26.

The square root of 545311511 is about 23351.9059393447. The cubic root of 545311511 is about 816.9865154104.

The spelling of 545311511 in words is "five hundred forty-five million, three hundred eleven thousand, five hundred eleven".