164277121 has 2 divisors, whose sum is σ = 164277122. Its totient is φ = 164277120.

The previous prime is 164277101. The next prime is 164277131. The reversal of 164277121 is 121772461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141610000 + 22667121 = 11900^2 + 4761^2 .

It is a cyclic number.

It is not a de Polignac number, because 164277121 - 2⁵ = 164277089 is a prime.

It is not a weakly prime, because it can be changed into another prime (164277101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82138560 + 82138561.

It is an arithmetic number, because the mean of its divisors is an integer number (82138561).

Almost surely, 2^164277121 is an apocalyptic number.

It is an amenable number.

164277121 is a deficient number, since it is larger than the sum of its proper divisors (1).

164277121 is an equidigital number, since it uses as much as digits as its factorization.

164277121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 31.

The square root of 164277121 is about 12817.0636652862. The cubic root of 164277121 is about 547.6785025712.

The spelling of 164277121 in words is "one hundred sixty-four million, two hundred seventy-seven thousand, one hundred twenty-one".