2245987 has 4 divisors (see below), whose sum is σ = 2249176. Its totient is φ = 2242800.

The previous prime is 2245979. The next prime is 2245993. The reversal of 2245987 is 7895422.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2245987 - 2³ = 2245979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2245687) 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, 18 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (562294).

2^2245987 is an apocalyptic number.

2245987 is a deficient number, since it is larger than the sum of its proper divisors (3189).

2245987 is a wasteful number, since it uses less digits than its factorization.

2245987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188.

The product of its digits is 40320, while the sum is 37.

The square root of 2245987 is about 1498.6617363501. The cubic root of 2245987 is about 130.9591193846.

The spelling of 2245987 in words is "two million, two hundred forty-five thousand, nine hundred eighty-seven".