36578161 has 2 divisors, whose sum is σ = 36578162. Its totient is φ = 36578160.

The previous prime is 36578153. The next prime is 36578189. The reversal of 36578161 is 16187563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26718561 + 9859600 = 5169^2 + 3140^2 .

It is a cyclic number.

It is not a de Polignac number, because 36578161 - 2³ = 36578153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36578161.

It is not a weakly prime, because it can be changed into another prime (36578141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18289080 + 18289081.

It is an arithmetic number, because the mean of its divisors is an integer number (18289081).

Almost surely, 2^36578161 is an apocalyptic number.

It is an amenable number.

36578161 is a deficient number, since it is larger than the sum of its proper divisors (1).

36578161 is an equidigital number, since it uses as much as digits as its factorization.

36578161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 36578161 is about 6047.9881778985. The cubic root of 36578161 is about 331.9509804483.

The spelling of 36578161 in words is "thirty-six million, five hundred seventy-eight thousand, one hundred sixty-one".