12915045 has 80 divisors (see below), whose sum is σ = 27320832. Its totient is φ = 5754240.

The previous prime is 12915043. The next prime is 12915059. The reversal of 12915045 is 54051921.

It is not a de Polignac number, because 12915045 - 2¹ = 12915043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12915043) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57804 + ... + 58026.

Almost surely, 2^12915045 is an apocalyptic number.

12915045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12915045 is an abundant number, since it is smaller than the sum of its proper divisors (14405787).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12915045 is a wasteful number, since it uses less digits than its factorization.

12915045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 12915045 is about 3593.7508260869. The cubic root of 12915045 is about 234.6201498905.

Adding to 12915045 its reverse (54051921), we get a palindrome (66966966).

It can be divided in two parts, 1291 and 5045, that added together give a palindrome (6336).

The spelling of 12915045 in words is "twelve million, nine hundred fifteen thousand, forty-five".