6351481 has 2 divisors, whose sum is σ = 6351482. Its totient is φ = 6351480.

The previous prime is 6351479. The next prime is 6351509. The reversal of 6351481 is 1841536.

6351481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (6351509) can be obtained adding 6351481 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3515625 + 2835856 = 1875^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 6351481 - 2¹ = 6351479 is a prime.

It is a super-2 number, since 2×6351481² = 80682621786722, which contains 22 as substring.

Together with 6351479, it forms a pair of twin primes.

6351481 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6351431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3175740 + 3175741.

It is an arithmetic number, because the mean of its divisors is an integer number (3175741).

Almost surely, 2^6351481 is an apocalyptic number.

It is an amenable number.

6351481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6351481 is an equidigital number, since it uses as much as digits as its factorization.

6351481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 6351481 is about 2520.2144750001. The cubic root of 6351481 is about 185.1931850979.

It can be divided in two parts, 635 and 1481, that added together give a square (2116 = 46²).

The spelling of 6351481 in words is "six million, three hundred fifty-one thousand, four hundred eighty-one".