36166531 has 4 divisors (see below), whose sum is σ = 38293992. Its totient is φ = 34039072.

The previous prime is 36166517. The next prime is 36166541. The reversal of 36166531 is 13566163.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36166531 - 2²¹ = 34069379 is a prime.

It is a super-2 number, since 2×36166531² = 2616035929147922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36166493 and 36166502.

It is not an unprimeable number, because it can be changed into a prime (36166541) 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, 1063705 + ... + 1063738.

It is an arithmetic number, because the mean of its divisors is an integer number (9573498).

Almost surely, 2^36166531 is an apocalyptic number.

36166531 is the 3804-th centered pentagonal number.

36166531 is a deficient number, since it is larger than the sum of its proper divisors (2127461).

36166531 is a wasteful number, since it uses less digits than its factorization.

36166531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127460.

The product of its digits is 9720, while the sum is 31.

The square root of 36166531 is about 6013.8615714032. The cubic root of 36166531 is about 330.7010837227.

The spelling of 36166531 in words is "thirty-six million, one hundred sixty-six thousand, five hundred thirty-one".