201555355 has 4 divisors (see below), whose sum is σ = 241866432. Its totient is φ = 161244280.

The previous prime is 201555353. The next prime is 201555373. The reversal of 201555355 is 553555102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201555355 - 2¹ = 201555353 is a prime.

It is a super-2 number, since 2×201555355² = 81249122258352050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201555353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20155531 + ... + 20155540.

It is an arithmetic number, because the mean of its divisors is an integer number (60466608).

Almost surely, 2^201555355 is an apocalyptic number.

201555355 is a deficient number, since it is larger than the sum of its proper divisors (40311077).

201555355 is an equidigital number, since it uses as much as digits as its factorization.

201555355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40311076.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 201555355 is about 14197.0192294016. The cubic root of 201555355 is about 586.3155966383.

The spelling of 201555355 in words is "two hundred one million, five hundred fifty-five thousand, three hundred fifty-five".