36507921 has 4 divisors (see below), whose sum is σ = 48677232. Its totient is φ = 24338612.

The previous prime is 36507901. The next prime is 36507929. The reversal of 36507921 is 12970563.

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 36507921 - 2¹⁸ = 36245777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36507929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6084651 + ... + 6084656.

It is an arithmetic number, because the mean of its divisors is an integer number (12169308).

Almost surely, 2^36507921 is an apocalyptic number.

It is an amenable number.

36507921 is a deficient number, since it is larger than the sum of its proper divisors (12169311).

36507921 is a wasteful number, since it uses less digits than its factorization.

36507921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12169310.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 36507921 is about 6042.1784978599. The cubic root of 36507921 is about 331.7383656287.

The spelling of 36507921 in words is "thirty-six million, five hundred seven thousand, nine hundred twenty-one".