36166421 has 2 divisors, whose sum is σ = 36166422. Its totient is φ = 36166420.

The previous prime is 36166411. The next prime is 36166433. The reversal of 36166421 is 12466163.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31798321 + 4368100 = 5639^2 + 2090^2 .

It is an emirp because it is prime and its reverse (12466163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36166421 - 2⁶ = 36166357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36166411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18083210 + 18083211.

It is an arithmetic number, because the mean of its divisors is an integer number (18083211).

Almost surely, 2^36166421 is an apocalyptic number.

It is an amenable number.

36166421 is a deficient number, since it is larger than the sum of its proper divisors (1).

36166421 is an equidigital number, since it uses as much as digits as its factorization.

36166421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 36166421 is about 6013.8524258582. The cubic root of 36166421 is about 330.7007484481.

The spelling of 36166421 in words is "thirty-six million, one hundred sixty-six thousand, four hundred twenty-one".