5642581 has 8 divisors (see below), whose sum is σ = 6466304. Its totient is φ = 4823280.

The previous prime is 5642531. The next prime is 5642591. The reversal of 5642581 is 1852465.

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

It is not a de Polignac number, because 5642581 - 2¹¹ = 5640533 is a prime.

It is a super-2 number, since 2×5642581² = 63677440683122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642531) 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 7 ways as a sum of consecutive naturals, for example, 2371 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (808288).

Almost surely, 2^5642581 is an apocalyptic number.

It is an amenable number.

5642581 is a deficient number, since it is larger than the sum of its proper divisors (823723).

5642581 is a wasteful number, since it uses less digits than its factorization.

5642581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211.

The product of its digits is 9600, while the sum is 31.

The square root of 5642581 is about 2375.4117537808. The cubic root of 5642581 is about 178.0297576811.

The spelling of 5642581 in words is "five million, six hundred forty-two thousand, five hundred eighty-one".