2115247 has 4 divisors (see below), whose sum is σ = 2134080. Its totient is φ = 2096416.

The previous prime is 2115233. The next prime is 2115277. The reversal of 2115247 is 7425112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115247 is a prime.

It is a Duffinian number.

2115247 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115227) 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, 9247 + ... + 9472.

It is an arithmetic number, because the mean of its divisors is an integer number (533520).

2^2115247 is an apocalyptic number.

2115247 is a deficient number, since it is larger than the sum of its proper divisors (18833).

2115247 is a wasteful number, since it uses less digits than its factorization.

2115247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18832.

The product of its digits is 560, while the sum is 22.

The square root of 2115247 is about 1454.3888750950. The cubic root of 2115247 is about 128.3670899374.

The spelling of 2115247 in words is "two million, one hundred fifteen thousand, two hundred forty-seven".