201555151 has 16 divisors (see below), whose sum is σ = 236494080. Its totient is φ = 168209280.

The previous prime is 201555121. The next prime is 201555157. The reversal of 201555151 is 151555102.

It is a cyclic number.

It is not a de Polignac number, because 201555151 - 2⁵ = 201555119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201555157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41911 + ... + 46471.

It is an arithmetic number, because the mean of its divisors is an integer number (14780880).

Almost surely, 2^201555151 is an apocalyptic number.

201555151 is a deficient number, since it is larger than the sum of its proper divisors (34938929).

201555151 is a wasteful number, since it uses less digits than its factorization.

201555151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 201555151 is about 14197.0120447931. The cubic root of 201555151 is about 586.3153988292.

The spelling of 201555151 in words is "two hundred one million, five hundred fifty-five thousand, one hundred fifty-one".