201156155 has 8 divisors (see below), whose sum is σ = 255586752. Its totient is φ = 151458688.

The previous prime is 201156149. The next prime is 201156157. The reversal of 201156155 is 551651102.

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 201156155 - 2⁴ = 201156139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201156157) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1183187 + ... + 1183356.

It is an arithmetic number, because the mean of its divisors is an integer number (31948344).

Almost surely, 2^201156155 is an apocalyptic number.

201156155 is a deficient number, since it is larger than the sum of its proper divisors (54430597).

201156155 is a wasteful number, since it uses less digits than its factorization.

201156155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366565.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 201156155 is about 14182.9529717898. The cubic root of 201156155 is about 585.9282557665.

The spelling of 201156155 in words is "two hundred one million, one hundred fifty-six thousand, one hundred fifty-five".