36258721 has 2 divisors, whose sum is σ = 36258722. Its totient is φ = 36258720.

The previous prime is 36258713. The next prime is 36258727. The reversal of 36258721 is 12785263.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 1860496 = 5865^2 + 1364^2 .

It is a cyclic number.

It is not a de Polignac number, because 36258721 - 2³ = 36258713 is a prime.

It is not a weakly prime, because it can be changed into another prime (36258727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18129360 + 18129361.

It is an arithmetic number, because the mean of its divisors is an integer number (18129361).

Almost surely, 2^36258721 is an apocalyptic number.

It is an amenable number.

36258721 is a deficient number, since it is larger than the sum of its proper divisors (1).

36258721 is an equidigital number, since it uses as much as digits as its factorization.

36258721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 36258721 is about 6021.5214854719. The cubic root of 36258721 is about 330.9818356056.

The spelling of 36258721 in words is "thirty-six million, two hundred fifty-eight thousand, seven hundred twenty-one".