545637853 has 4 divisors (see below), whose sum is σ = 560384860. Its totient is φ = 530890848.

The previous prime is 545637823. The next prime is 545637889. The reversal of 545637853 is 358736545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 358736545 = 5 ⋅71747309.

It can be written as a sum of positive squares in 2 ways, for example, as 529138009 + 16499844 = 23003^2 + 4062^2 .

It is a cyclic number.

It is not a de Polignac number, because 545637853 - 2²⁹ = 8766941 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 (545637803) 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, 7373448 + ... + 7373521.

It is an arithmetic number, because the mean of its divisors is an integer number (140096215).

Almost surely, 2^545637853 is an apocalyptic number.

It is an amenable number.

545637853 is a deficient number, since it is larger than the sum of its proper divisors (14747007).

545637853 is a wasteful number, since it uses less digits than its factorization.

545637853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14747006.

The product of its digits is 1512000, while the sum is 46.

The square root of 545637853 is about 23358.8923752818. The cubic root of 545637853 is about 817.1494582666.

The spelling of 545637853 in words is "five hundred forty-five million, six hundred thirty-seven thousand, eight hundred fifty-three".