2015012145 has 16 divisors (see below), whose sum is σ = 3225900672. Its totient is φ = 1074046080.

The previous prime is 2015012143. The next prime is 2015012161. The reversal of 2015012145 is 5412105102.

It is not a de Polignac number, because 2015012145 - 2¹ = 2015012143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2015012143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12021 + ... + 64610.

It is an arithmetic number, because the mean of its divisors is an integer number (201618792).

Almost surely, 2^2015012145 is an apocalyptic number.

It is an amenable number.

2015012145 is a deficient number, since it is larger than the sum of its proper divisors (1210888527).

2015012145 is a wasteful number, since it uses less digits than its factorization.

2015012145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78392.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2015012145 is about 44888.8866536028. The cubic root of 2015012145 is about 1263.0655482731.

Adding to 2015012145 its reverse (5412105102), we get a palindrome (7427117247).

The spelling of 2015012145 in words is "two billion, fifteen million, twelve thousand, one hundred forty-five".