201515045 has 16 divisors (see below), whose sum is σ = 255320640. Its totient is φ = 152262144.

The previous prime is 201515021. The next prime is 201515057. The reversal of 201515045 is 540515102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201515045 - 2¹⁶ = 201449509 is a prime.

It is a super-2 number, since 2×201515045² = 81216626722704050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201515045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29909 + ... + 36021.

It is an arithmetic number, because the mean of its divisors is an integer number (15957540).

Almost surely, 2^201515045 is an apocalyptic number.

It is an amenable number.

201515045 is a deficient number, since it is larger than the sum of its proper divisors (53805595).

201515045 is a wasteful number, since it uses less digits than its factorization.

201515045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 201515045 is about 14195.5994942095. The cubic root of 201515045 is about 586.2765073643.

The spelling of 201515045 in words is "two hundred one million, five hundred fifteen thousand, forty-five".