201506101 has 4 divisors (see below), whose sum is σ = 201537952. Its totient is φ = 201474252.

The previous prime is 201506093. The next prime is 201506131. The reversal of 201506101 is 101605102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101605102 = 2 ⋅50802551.

It is a cyclic number.

It is not a de Polignac number, because 201506101 - 2³ = 201506093 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 (201506131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2865 + ... + 20278.

It is an arithmetic number, because the mean of its divisors is an integer number (50384488).

Almost surely, 2^201506101 is an apocalyptic number.

It is an amenable number.

201506101 is a deficient number, since it is larger than the sum of its proper divisors (31851).

201506101 is an equidigital number, since it uses as much as digits as its factorization.

201506101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31850.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 201506101 is about 14195.2844635111. The cubic root of 201506101 is about 586.2678335129.

Subtracting from 201506101 its reverse (101605102), we obtain a palindrome (99900999).

The spelling of 201506101 in words is "two hundred one million, five hundred six thousand, one hundred one".