205371355 has 16 divisors (see below), whose sum is σ = 281988864. Its totient is φ = 140657760.

The previous prime is 205371317. The next prime is 205371377. The reversal of 205371355 is 553173502.

It is not a de Polignac number, because 205371355 - 2¹⁵ = 205338587 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30964 + ... + 37006.

It is an arithmetic number, because the mean of its divisors is an integer number (17624304).

Almost surely, 2^205371355 is an apocalyptic number.

205371355 is a deficient number, since it is larger than the sum of its proper divisors (76617509).

205371355 is an equidigital number, since it uses as much as digits as its factorization.

205371355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026.

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 205371355 is about 14330.7834747441. The cubic root of 205371355 is about 589.9926792159.

The spelling of 205371355 in words is "two hundred five million, three hundred seventy-one thousand, three hundred fifty-five".