5456781 has 32 divisors (see below), whose sum is σ = 9292800. Its totient is φ = 3129840.

The previous prime is 5456777. The next prime is 5456783. The reversal of 5456781 is 1876545.

It is not a de Polignac number, because 5456781 - 2² = 5456777 is a prime.

It is a super-2 number, since 2×5456781² = 59552917763922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5456783) 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 31 ways as a sum of consecutive naturals, for example, 5160 + ... + 6126.

It is an arithmetic number, because the mean of its divisors is an integer number (290400).

Almost surely, 2^5456781 is an apocalyptic number.

It is an amenable number.

5456781 is a deficient number, since it is larger than the sum of its proper divisors (3836019).

5456781 is a wasteful number, since it uses less digits than its factorization.

5456781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 5456781 is about 2335.9753851443. The cubic root of 5456781 is about 176.0538424282.

The spelling of 5456781 in words is "five million, four hundred fifty-six thousand, seven hundred eighty-one".