545183881 has 16 divisors (see below), whose sum is σ = 621831168. Its totient is φ = 473136400.

The previous prime is 545183869. The next prime is 545183911. The reversal of 545183881 is 188381545.

It is not a de Polignac number, because 545183881 - 2⁷ = 545183753 is a prime.

It is a super-2 number, since 2×545183881² = 594450928204444322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545153881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146676 + ... + 150346.

It is an arithmetic number, because the mean of its divisors is an integer number (38864448).

Almost surely, 2^545183881 is an apocalyptic number.

It is an amenable number.

545183881 is a deficient number, since it is larger than the sum of its proper divisors (76647287).

545183881 is a wasteful number, since it uses less digits than its factorization.

545183881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292.

The product of its digits is 153600, while the sum is 43.

The square root of 545183881 is about 23349.1730260410. The cubic root of 545183881 is about 816.9227719519.

The spelling of 545183881 in words is "five hundred forty-five million, one hundred eighty-three thousand, eight hundred eighty-one".