6451291 has 12 divisors (see below), whose sum is σ = 8187480. Its totient is φ = 5026560.

The previous prime is 6451271. The next prime is 6451297. The reversal of 6451291 is 1921546.

It is not a de Polignac number, because 6451291 - 2⁵ = 6451259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6451297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5446 + ... + 6523.

It is an arithmetic number, because the mean of its divisors is an integer number (682290).

Almost surely, 2^6451291 is an apocalyptic number.

6451291 is a deficient number, since it is larger than the sum of its proper divisors (1736189).

6451291 is a wasteful number, since it uses less digits than its factorization.

6451291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11994 (or 11987 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 6451291 is about 2539.9391725000. The cubic root of 6451291 is about 186.1582170177.

It can be divided in two parts, 645 and 1291, that multiplied together give a triangular number (832695 = T₁₂₉₀).

The spelling of 6451291 in words is "six million, four hundred fifty-one thousand, two hundred ninety-one".