545513143 has 4 divisors (see below), whose sum is σ = 623443600. Its totient is φ = 467582688.

The previous prime is 545513099. The next prime is 545513167. The reversal of 545513143 is 341315545.

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 545513143 - 2⁹ = 545512631 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 (545513173) 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, 38965218 + ... + 38965231.

It is an arithmetic number, because the mean of its divisors is an integer number (155860900).

Almost surely, 2^545513143 is an apocalyptic number.

545513143 is a deficient number, since it is larger than the sum of its proper divisors (77930457).

545513143 is an equidigital number, since it uses as much as digits as its factorization.

545513143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77930456.

The product of its digits is 18000, while the sum is 31.

The square root of 545513143 is about 23356.2227896550. Note that the first 3 decimals coincide. The cubic root of 545513143 is about 817.0871981227.

Adding to 545513143 its reverse (341315545), we get a palindrome (886828688).

The spelling of 545513143 in words is "five hundred forty-five million, five hundred thirteen thousand, one hundred forty-three".