5006781 has 12 divisors (see below), whose sum is σ = 7788508. Its totient is φ = 3081024.

The previous prime is 5006773. The next prime is 5006831. The reversal of 5006781 is 1876005.

It can be written as a sum of positive squares in 2 ways, for example, as 1602756 + 3404025 = 1266^2 + 1845^2 .

It is not a de Polignac number, because 5006781 - 2³ = 5006773 is a prime.

It is a super-2 number, since 2×5006781² = 50135711963922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5006711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21280 + ... + 21513.

Almost surely, 2^5006781 is an apocalyptic number.

It is an amenable number.

5006781 is a deficient number, since it is larger than the sum of its proper divisors (2781727).

5006781 is a wasteful number, since it uses less digits than its factorization.

5006781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42812 (or 42809 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 5006781 is about 2237.5837414497. The cubic root of 5006781 is about 171.0748620608.

The spelling of 5006781 in words is "five million, six thousand, seven hundred eighty-one".