536909581 has 16 divisors (see below), whose sum is σ = 610872640. Its totient is φ = 467804160.

The previous prime is 536909573. The next prime is 536909591. The reversal of 536909581 is 185909635.

It is a cyclic number.

It is not a de Polignac number, because 536909581 - 2³ = 536909573 is a prime.

It is a super-2 number, since 2×536909581² = 576543796339191122, 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 (536909561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66061 + ... + 73741.

It is an arithmetic number, because the mean of its divisors is an integer number (38179540).

Almost surely, 2^536909581 is an apocalyptic number.

It is an amenable number.

536909581 is a deficient number, since it is larger than the sum of its proper divisors (73963059).

536909581 is a wasteful number, since it uses less digits than its factorization.

536909581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7996.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 536909581 is about 23171.3094364561. The cubic root of 536909581 is about 812.7688513366.

The spelling of 536909581 in words is "five hundred thirty-six million, nine hundred nine thousand, five hundred eighty-one".