4525581 has 8 divisors (see below), whose sum is σ = 6197344. Its totient is φ = 2935440.

The previous prime is 4525579. The next prime is 4525589. The reversal of 4525581 is 1855254.

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

It is not a de Polignac number, because 4525581 - 2¹ = 4525579 is a prime.

It is a super-2 number, since 2×4525581² = 40961766775122, 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 (4525589) 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, 20275 + ... + 20496.

It is an arithmetic number, because the mean of its divisors is an integer number (774668).

Almost surely, 2^4525581 is an apocalyptic number.

It is an amenable number.

4525581 is a deficient number, since it is larger than the sum of its proper divisors (1671763).

4525581 is a wasteful number, since it uses less digits than its factorization.

4525581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40811.

The product of its digits is 8000, while the sum is 30.

The square root of 4525581 is about 2127.3412984286. The cubic root of 4525581 is about 165.4086107770.

The spelling of 4525581 in words is "four million, five hundred twenty-five thousand, five hundred eighty-one".