545872269 has 4 divisors (see below), whose sum is σ = 727829696. Its totient is φ = 363914844.

The previous prime is 545872267. The next prime is 545872303. The reversal of 545872269 is 962278545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 545872269 - 2¹ = 545872267 is a prime.

It is a super-2 number, since 2×545872269² = 595953068126416722, 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 (545872267) 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, 90978709 + ... + 90978714.

It is an arithmetic number, because the mean of its divisors is an integer number (181957424).

Almost surely, 2^545872269 is an apocalyptic number.

It is an amenable number.

545872269 is a deficient number, since it is larger than the sum of its proper divisors (181957427).

545872269 is a wasteful number, since it uses less digits than its factorization.

545872269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181957426.

The product of its digits is 1209600, while the sum is 48.

The square root of 545872269 is about 23363.9095401433. The cubic root of 545872269 is about 817.2664622962.

The spelling of 545872269 in words is "five hundred forty-five million, eight hundred seventy-two thousand, two hundred sixty-nine".