36356561 has 4 divisors (see below), whose sum is σ = 36634224. Its totient is φ = 36078900.

The previous prime is 36356539. The next prime is 36356581. The reversal of 36356561 is 16565363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36356561 - 2⁶ = 36356497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36356501) 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, 138635 + ... + 138896.

It is an arithmetic number, because the mean of its divisors is an integer number (9158556).

Almost surely, 2^36356561 is an apocalyptic number.

It is an amenable number.

36356561 is a deficient number, since it is larger than the sum of its proper divisors (277663).

36356561 is a wasteful number, since it uses less digits than its factorization.

36356561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277662.

The product of its digits is 48600, while the sum is 35.

The square root of 36356561 is about 6029.6402048547. The cubic root of 36356561 is about 331.2792737390.

The spelling of 36356561 in words is "thirty-six million, three hundred fifty-six thousand, five hundred sixty-one".