536955581 has 4 divisors (see below), whose sum is σ = 551467932. Its totient is φ = 522443232.

The previous prime is 536955571. The next prime is 536955593. The reversal of 536955581 is 185559635.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 517153081 + 19802500 = 22741^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 536955581 - 2¹⁰ = 536954557 is a prime.

It is a super-2 number, since 2×536955581² = 576642591934095122, 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 (536955521) 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 3 ways as a sum of consecutive naturals, for example, 7256120 + ... + 7256193.

It is an arithmetic number, because the mean of its divisors is an integer number (137866983).

Almost surely, 2^536955581 is an apocalyptic number.

It is an amenable number.

536955581 is a deficient number, since it is larger than the sum of its proper divisors (14512351).

536955581 is a wasteful number, since it uses less digits than its factorization.

536955581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14512350.

The product of its digits is 810000, while the sum is 47.

The square root of 536955581 is about 23172.3020220262. The cubic root of 536955581 is about 812.7920621346.

The spelling of 536955581 in words is "five hundred thirty-six million, nine hundred fifty-five thousand, five hundred eighty-one".