201515152 has 20 divisors (see below), whose sum is σ = 392927356. Its totient is φ = 100114560.

The previous prime is 201515137. The next prime is 201515173. The reversal of 201515152 is 251515102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78216336 + 123298816 = 8844^2 + 11104^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37599 + ... + 42622.

Almost surely, 2^201515152 is an apocalyptic number.

It is an amenable number.

201515152 is a deficient number, since it is larger than the sum of its proper divisors (191412204).

201515152 is a wasteful number, since it uses less digits than its factorization.

201515152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80386 (or 80380 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 201515152 is about 14195.6032629825. The cubic root of 201515152 is about 586.2766111309.

Multiplying 201515152 by its sum of digits (22), we get a palindrome (4433333344).

The spelling of 201515152 in words is "two hundred one million, five hundred fifteen thousand, one hundred fifty-two".