201151515 has 16 divisors (see below), whose sum is σ = 322076448. Its totient is φ = 107202816.

The previous prime is 201151501. The next prime is 201151567. The reversal of 201151515 is 515151102.

It is not a de Polignac number, because 201151515 - 2⁶ = 201151451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201151491 and 201151500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20809 + ... + 28901.

It is an arithmetic number, because the mean of its divisors is an integer number (20129778).

Almost surely, 2^201151515 is an apocalyptic number.

201151515 is a deficient number, since it is larger than the sum of its proper divisors (120924933).

201151515 is a wasteful number, since it uses less digits than its factorization.

201151515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9758.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 201151515 is about 14182.7893941918. The cubic root of 201151515 is about 585.9237505965.

The spelling of 201151515 in words is "two hundred one million, one hundred fifty-one thousand, five hundred fifteen".