36561243 has 6 divisors (see below), whose sum is σ = 48762292. Its totient is φ = 24367180.

The previous prime is 36561229. The next prime is 36561277. The reversal of 36561243 is 34216563.

It is not a de Polignac number, because 36561243 - 2⁴ = 36561227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36561243.

It is not an unprimeable number, because it can be changed into a prime (36561443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8728 + ... + 12218.

Almost surely, 2^36561243 is an apocalyptic number.

36561243 is a deficient number, since it is larger than the sum of its proper divisors (12201049).

36561243 is an frugal number, since it uses more digits than its factorization.

36561243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985 (or 3494 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 36561243 is about 6046.5893692230. The cubic root of 36561243 is about 331.8997949634.

The spelling of 36561243 in words is "thirty-six million, five hundred sixty-one thousand, two hundred forty-three".