2015040245 has 4 divisors (see below), whose sum is σ = 2418048300. Its totient is φ = 1612032192.

The previous prime is 2015040221. The next prime is 2015040253. The reversal of 2015040245 is 5420405102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 253223569 + 1761816676 = 15913^2 + 41974^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2015040245 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2015040245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201504020 + ... + 201504029.

It is an arithmetic number, because the mean of its divisors is an integer number (604512075).

Almost surely, 2^2015040245 is an apocalyptic number.

It is an amenable number.

2015040245 is a deficient number, since it is larger than the sum of its proper divisors (403008055).

2015040245 is an equidigital number, since it uses as much as digits as its factorization.

2015040245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403008054.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2015040245 is about 44889.1996475767. The cubic root of 2015040245 is about 1263.0714195325.

Adding to 2015040245 its reverse (5420405102), we get a palindrome (7435445347).

The spelling of 2015040245 in words is "two billion, fifteen million, forty thousand, two hundred forty-five".