201591955 has 8 divisors (see below), whose sum is σ = 247536432. Its totient is φ = 157522848.

The previous prime is 201591917. The next prime is 201591961. The reversal of 201591955 is 559195102.

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 201591955 - 2¹³ = 201583763 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, 468604 + ... + 469033.

It is an arithmetic number, because the mean of its divisors is an integer number (30942054).

Almost surely, 2^201591955 is an apocalyptic number.

201591955 is a deficient number, since it is larger than the sum of its proper divisors (45944477).

201591955 is an equidigital number, since it uses as much as digits as its factorization.

201591955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937685.

The product of its (nonzero) digits is 20250, while the sum is 37.

The square root of 201591955 is about 14198.3081738635. The cubic root of 201591955 is about 586.3510837498.

The spelling of 201591955 in words is "two hundred one million, five hundred ninety-one thousand, nine hundred fifty-five".