36215009 has 2 divisors, whose sum is σ = 36215010. Its totient is φ = 36215008.

The previous prime is 36214979. The next prime is 36215021. The reversal of 36215009 is 90051263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31888609 + 4326400 = 5647^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 36215009 - 2⁸ = 36214753 is a prime.

It is equal to p_2216582 and since 36215009 and 2216582 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (36215089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18107504 + 18107505.

It is an arithmetic number, because the mean of its divisors is an integer number (18107505).

Almost surely, 2^36215009 is an apocalyptic number.

It is an amenable number.

36215009 is a deficient number, since it is larger than the sum of its proper divisors (1).

36215009 is an equidigital number, since it uses as much as digits as its factorization.

36215009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 36215009 is about 6017.8907434416. The cubic root of 36215009 is about 330.8487761609.

The spelling of 36215009 in words is "thirty-six million, two hundred fifteen thousand, nine".