545521343 has 4 divisors (see below), whose sum is σ = 545965728. Its totient is φ = 545076960.

The previous prime is 545521297. The next prime is 545521363. The reversal of 545521343 is 343125545.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545521343 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 (545521363) 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, 220346 + ... + 222807.

It is an arithmetic number, because the mean of its divisors is an integer number (136491432).

Almost surely, 2^545521343 is an apocalyptic number.

545521343 is a deficient number, since it is larger than the sum of its proper divisors (444385).

545521343 is a wasteful number, since it uses less digits than its factorization.

545521343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444384.

The product of its digits is 36000, while the sum is 32.

The square root of 545521343 is about 23356.3983310784. The cubic root of 545521343 is about 817.0912921771.

Adding to 545521343 its reverse (343125545), we get a palindrome (888646888).

The spelling of 545521343 in words is "five hundred forty-five million, five hundred twenty-one thousand, three hundred forty-three".