545633253 has 20 divisors (see below), whose sum is σ = 889181568. Its totient is φ = 330686280.

The previous prime is 545633233. The next prime is 545633303. The reversal of 545633253 is 352336545.

545633253 is a `hidden beast` number, since 545 + 63 + 3 + 2 + 53 = 666.

It is not a de Polignac number, because 545633253 - 2⁹ = 545632741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545633233) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 305301 + ... + 307082.

Almost surely, 2^545633253 is an apocalyptic number.

It is an amenable number.

545633253 is a deficient number, since it is larger than the sum of its proper divisors (343548315).

545633253 is a wasteful number, since it uses less digits than its factorization.

545633253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612406 (or 612397 counting only the distinct ones).

The product of its digits is 162000, while the sum is 36.

The square root of 545633253 is about 23358.7939115015. The cubic root of 545633253 is about 817.1471619340.

Adding to 545633253 its reverse (352336545), we get a palindrome (897969798).

The spelling of 545633253 in words is "five hundred forty-five million, six hundred thirty-three thousand, two hundred fifty-three".