201552101 has 2 divisors, whose sum is σ = 201552102. Its totient is φ = 201552100.

The previous prime is 201552097. The next prime is 201552107. The reversal of 201552101 is 101255102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184987201 + 16564900 = 13601^2 + 4070^2 .

It is a cyclic number.

It is not a de Polignac number, because 201552101 - 2² = 201552097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201552101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201552107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100776050 + 100776051.

It is an arithmetic number, because the mean of its divisors is an integer number (100776051).

Almost surely, 2^201552101 is an apocalyptic number.

It is an amenable number.

201552101 is a deficient number, since it is larger than the sum of its proper divisors (1).

201552101 is an equidigital number, since it uses as much as digits as its factorization.

201552101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 201552101 is about 14196.9046274179. The cubic root of 201552101 is about 586.3124413740.

The spelling of 201552101 in words is "two hundred one million, five hundred fifty-two thousand, one hundred one".