2015531516 has 12 divisors (see below), whose sum is σ = 3532586232. Its totient is φ = 1006221168.

The previous prime is 2015531491. The next prime is 2015531519. The reversal of 2015531516 is 6151355102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015531519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383210 + ... + 388433.

It is an arithmetic number, because the mean of its divisors is an integer number (294382186).

Almost surely, 2^2015531516 is an apocalyptic number.

It is an amenable number.

2015531516 is a deficient number, since it is larger than the sum of its proper divisors (1517054716).

2015531516 is a wasteful number, since it uses less digits than its factorization.

2015531516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772300 (or 772298 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 2015531516 is about 44894.6713541819. The cubic root of 2015531516 is about 1263.1740576710.

Adding to 2015531516 its reverse (6151355102), we get a palindrome (8166886618).

The spelling of 2015531516 in words is "two billion, fifteen million, five hundred thirty-one thousand, five hundred sixteen".