205140355 has 8 divisors (see below), whose sum is σ = 281335392. Its totient is φ = 140667648.

The previous prime is 205140349. The next prime is 205140391. The reversal of 205140355 is 553041502.

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

It is a cyclic number.

It is not a de Polignac number, because 205140355 - 2⁵ = 205140323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2930542 + ... + 2930611.

It is an arithmetic number, because the mean of its divisors is an integer number (35166924).

Almost surely, 2^205140355 is an apocalyptic number.

205140355 is a deficient number, since it is larger than the sum of its proper divisors (76195037).

205140355 is an equidigital number, since it uses as much as digits as its factorization.

205140355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5861165.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 205140355 is about 14322.7216338236. The cubic root of 205140355 is about 589.7713899332.

Adding to 205140355 its reverse (553041502), we get a palindrome (758181857).

The spelling of 205140355 in words is "two hundred five million, one hundred forty thousand, three hundred fifty-five".