2251647 has 12 divisors (see below), whose sum is σ = 3364920. Its totient is φ = 1449168.

The previous prime is 2251643. The next prime is 2251649. The reversal of 2251647 is 7461522.

It is not a de Polignac number, because 2251647 - 2² = 2251643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2251647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4053 + ... + 4574.

It is an arithmetic number, because the mean of its divisors is an integer number (280410).

2^2251647 is an apocalyptic number.

2251647 is a deficient number, since it is larger than the sum of its proper divisors (1113273).

2251647 is a wasteful number, since it uses less digits than its factorization.

2251647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662 (or 8659 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2251647 is about 1500.5488995698. The cubic root of 2251647 is about 131.0690349572.

The spelling of 2251647 in words is "two million, two hundred fifty-one thousand, six hundred forty-seven".