201500290 has 16 divisors (see below), whose sum is σ = 364150080. Its totient is φ = 80278000.

The previous prime is 201500287. The next prime is 201500293. The reversal of 201500290 is 92005102.

It is an interprime number because it is at equal distance from previous prime (201500287) and next prime (201500293).

It is not an unprimeable number, because it can be changed into a prime (201500293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37630 + ... + 42649.

It is an arithmetic number, because the mean of its divisors is an integer number (22759380).

Almost surely, 2^201500290 is an apocalyptic number.

201500290 is a deficient number, since it is larger than the sum of its proper divisors (162649790).

201500290 is a wasteful number, since it uses less digits than its factorization.

201500290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80537.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 201500290 is about 14195.0797813890. The cubic root of 201500290 is about 586.2621978934.

Adding to 201500290 its reverse (92005102), we get a palindrome (293505392).

The spelling of 201500290 in words is "two hundred one million, five hundred thousand, two hundred ninety".