36521797 has 12 divisors (see below), whose sum is σ = 41785156. Its totient is φ = 31726080.

The previous prime is 36521789. The next prime is 36521801. The reversal of 36521797 is 79712563.

It can be written as a sum of positive squares in 6 ways, for example, as 1640961 + 34880836 = 1281^2 + 5906^2 .

It is not a de Polignac number, because 36521797 - 2³ = 36521789 is a prime.

It is a super-2 number, since 2×36521797² = 2667683312218418, 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 (36521707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1104 + ... + 8617.

Almost surely, 2^36521797 is an apocalyptic number.

It is an amenable number.

36521797 is a deficient number, since it is larger than the sum of its proper divisors (5263359).

36521797 is a wasteful number, since it uses less digits than its factorization.

36521797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768 (or 9751 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

The square root of 36521797 is about 6043.3266501158. The cubic root of 36521797 is about 331.7803895545.

The spelling of 36521797 in words is "thirty-six million, five hundred twenty-one thousand, seven hundred ninety-seven".