201511150 has 24 divisors (see below), whose sum is σ = 394539480. Its totient is φ = 76361760.

The previous prime is 201511147. The next prime is 201511153. The reversal of 201511150 is 51115102.

It is an interprime number because it is at equal distance from previous prime (201511147) and next prime (201511153).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201511153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105109 + ... + 107008.

It is an arithmetic number, because the mean of its divisors is an integer number (16439145).

Almost surely, 2^201511150 is an apocalyptic number.

201511150 is a deficient number, since it is larger than the sum of its proper divisors (193028330).

201511150 is a wasteful number, since it uses less digits than its factorization.

201511150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212148 (or 212143 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 201511150 is about 14195.4623031446. The cubic root of 201511150 is about 586.2727300422.

Adding to 201511150 its reverse (51115102), we get a palindrome (252626252).

The spelling of 201511150 in words is "two hundred one million, five hundred eleven thousand, one hundred fifty".