205452321 has 8 divisors (see below), whose sum is σ = 274030464. Its totient is φ = 136921200.

The previous prime is 205452319. The next prime is 205452329. The reversal of 205452321 is 123254502.

205452321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205452321 - 2¹ = 205452319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205452291 and 205452300.

It is not an unprimeable number, because it can be changed into a prime (205452329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171 + ... + 20271.

It is an arithmetic number, because the mean of its divisors is an integer number (34253808).

Almost surely, 2^205452321 is an apocalyptic number.

It is an amenable number.

205452321 is a deficient number, since it is larger than the sum of its proper divisors (68578143).

205452321 is a wasteful number, since it uses less digits than its factorization.

205452321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23511.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 205452321 is about 14333.6080942657. The cubic root of 205452321 is about 590.0702023139.

The spelling of 205452321 in words is "two hundred five million, four hundred fifty-two thousand, three hundred twenty-one".