2051447 has 4 divisors (see below), whose sum is σ = 2056560. Its totient is φ = 2046336.

The previous prime is 2051443. The next prime is 2051459. The reversal of 2051447 is 7441502.

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

It is a cyclic number.

It is not a de Polignac number, because 2051447 - 2² = 2051443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051443) 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, 1898 + ... + 2775.

It is an arithmetic number, because the mean of its divisors is an integer number (514140).

2^2051447 is an apocalyptic number.

2051447 is a deficient number, since it is larger than the sum of its proper divisors (5113).

2051447 is an equidigital number, since it uses as much as digits as its factorization.

2051447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 2051447 is about 1432.2873315086. The cubic root of 2051447 is about 127.0632912465.

Adding to 2051447 its reverse (7441502), we get a palindrome (9492949).

The spelling of 2051447 in words is "two million, fifty-one thousand, four hundred forty-seven".