5071581 has 12 divisors (see below), whose sum is σ = 7450560. Its totient is φ = 3323400.

The previous prime is 5071579. The next prime is 5071589. The reversal of 5071581 is 1851705.

5071581 is a `hidden beast` number, since 507 + 158 + 1 = 666.

5071581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5071581 - 2¹ = 5071579 is a prime.

It is a super-2 number, since 2×5071581² = 51441867679122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5071589) 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, 4245 + ... + 5306.

It is an arithmetic number, because the mean of its divisors is an integer number (620880).

Almost surely, 2^5071581 is an apocalyptic number.

It is an amenable number.

5071581 is a deficient number, since it is larger than the sum of its proper divisors (2378979).

5071581 is a wasteful number, since it uses less digits than its factorization.

5071581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9616 (or 9613 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 5071581 is about 2252.0170958499. The cubic root of 5071581 is about 171.8097432047.

It can be divided in two parts, 50 and 71581, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 5071581 in words is "five million, seventy-one thousand, five hundred eighty-one".