2051451 has 12 divisors (see below), whose sum is σ = 2993328. Its totient is φ = 1353744.

The previous prime is 2051443. The next prime is 2051459. The reversal of 2051451 is 1541502.

It is an interprime number because it is at equal distance from previous prime (2051443) and next prime (2051459).

It is not a de Polignac number, because 2051451 - 2³ = 2051443 is a prime.

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2051459) 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, 180 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (249444).

2^2051451 is an apocalyptic number.

2051451 is a deficient number, since it is larger than the sum of its proper divisors (941877).

2051451 is a wasteful number, since it uses less digits than its factorization.

2051451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2051451 is about 1432.2887278758. The cubic root of 2051451 is about 127.0633738309.

Adding to 2051451 its reverse (1541502), we get a palindrome (3592953).

The spelling of 2051451 in words is "two million, fifty-one thousand, four hundred fifty-one".