6451081 has 8 divisors (see below), whose sum is σ = 7939904. Its totient is φ = 5104080.

The previous prime is 6451033. The next prime is 6451087. The reversal of 6451081 is 1801546.

6451081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6451081 - 2⁷ = 6450953 is a prime.

It is a super-2 number, since 2×6451081² = 83232892137122, which contains 22 as substring.

6451081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6451087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35355 + ... + 35536.

It is an arithmetic number, because the mean of its divisors is an integer number (992488).

Almost surely, 2^6451081 is an apocalyptic number.

It is an amenable number.

6451081 is a deficient number, since it is larger than the sum of its proper divisors (1488823).

6451081 is a wasteful number, since it uses less digits than its factorization.

6451081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70911.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 6451081 is about 2539.8978325909. The cubic root of 6451081 is about 186.1561970784.

The spelling of 6451081 in words is "six million, four hundred fifty-one thousand, eighty-one".