201550101 has 8 divisors (see below), whose sum is σ = 269178624. Its totient is φ = 134144160.

The previous prime is 201550057. The next prime is 201550121. The reversal of 201550101 is 101055102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201550101 - 2²¹ = 199452949 is a prime.

It is a super-2 number, since 2×201550101² = 81244886426220402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201550121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53520 + ... + 57161.

It is an arithmetic number, because the mean of its divisors is an integer number (33647328).

Almost surely, 2^201550101 is an apocalyptic number.

It is an amenable number.

201550101 is a deficient number, since it is larger than the sum of its proper divisors (67628523).

201550101 is a wasteful number, since it uses less digits than its factorization.

201550101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111291.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 201550101 is about 14196.8341893536. The cubic root of 201550101 is about 586.3105020429.

The spelling of 201550101 in words is "two hundred one million, five hundred fifty thousand, one hundred one".