36099521 has 4 divisors (see below), whose sum is σ = 36457044. Its totient is φ = 35742000.

The previous prime is 36099509. The next prime is 36099523. The reversal of 36099521 is 12599063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12599063 = 103 ⋅122321.

It can be written as a sum of positive squares in 2 ways, for example, as 24641296 + 11458225 = 4964^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 36099521 - 2²² = 31905217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36099523) 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, 178610 + ... + 178811.

It is an arithmetic number, because the mean of its divisors is an integer number (9114261).

Almost surely, 2^36099521 is an apocalyptic number.

It is an amenable number.

36099521 is a deficient number, since it is larger than the sum of its proper divisors (357523).

36099521 is a wasteful number, since it uses less digits than its factorization.

36099521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357522.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 36099521 is about 6008.2876928456. The cubic root of 36099521 is about 330.4967144764.

The spelling of 36099521 in words is "thirty-six million, ninety-nine thousand, five hundred twenty-one".