2015012291 has 2 divisors, whose sum is σ = 2015012292. Its totient is φ = 2015012290.

The previous prime is 2015012287. The next prime is 2015012371. The reversal of 2015012291 is 1922105102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2015012291 - 2² = 2015012287 is a prime.

It is not a weakly prime, because it can be changed into another prime (2015012201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007506145 + 1007506146.

It is an arithmetic number, because the mean of its divisors is an integer number (1007506146).

Almost surely, 2^2015012291 is an apocalyptic number.

2015012291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015012291 is an equidigital number, since it uses as much as digits as its factorization.

2015012291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 2015012291 is about 44888.8882798405. Note that the first 3 decimals coincide. The cubic root of 2015012291 is about 1263.0655787788.

Adding to 2015012291 its reverse (1922105102), we get a palindrome (3937117393).

The spelling of 2015012291 in words is "two billion, fifteen million, twelve thousand, two hundred ninety-one".