205413453 has 48 divisors (see below), whose sum is σ = 349180416. Its totient is φ = 113932800.

The previous prime is 205413407. The next prime is 205413457. The reversal of 205413453 is 354314502.

205413453 is a `hidden beast` number, since 205 + 4 + 1 + 3 + 453 = 666.

It is not a de Polignac number, because 205413453 - 2¹⁰ = 205412429 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 (205413457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 512053 + ... + 512453.

It is an arithmetic number, because the mean of its divisors is an integer number (7274592).

Almost surely, 2^205413453 is an apocalyptic number.

It is an amenable number.

205413453 is a deficient number, since it is larger than the sum of its proper divisors (143766963).

205413453 is a wasteful number, since it uses less digits than its factorization.

205413453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 205413453 is about 14332.2521956600. The cubic root of 205413453 is about 590.0329896329.

Adding to 205413453 its reverse (354314502), we get a palindrome (559727955).

The spelling of 205413453 in words is "two hundred five million, four hundred thirteen thousand, four hundred fifty-three".