201530115 has 24 divisors (see below), whose sum is σ = 355914000. Its totient is φ = 105453504.

The previous prime is 201530107. The next prime is 201530137. The reversal of 201530115 is 511035102.

201530115 is a `hidden beast` number, since 20 + 1 + 530 + 115 = 666.

It is not a de Polignac number, because 201530115 - 2³ = 201530107 is a prime.

It is a super-2 number, since 2×201530115² = 81228774503826450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39865 + ... + 44634.

It is an arithmetic number, because the mean of its divisors is an integer number (14829750).

Almost surely, 2^201530115 is an apocalyptic number.

201530115 is a deficient number, since it is larger than the sum of its proper divisors (154383885).

201530115 is a wasteful number, since it uses less digits than its factorization.

201530115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84563 (or 84560 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 201530115 is about 14196.1302825805. The cubic root of 201530115 is about 586.2911216027.

Adding to 201530115 its reverse (511035102), we get a palindrome (712565217).

The spelling of 201530115 in words is "two hundred one million, five hundred thirty thousand, one hundred fifteen".