164366551 has 2 divisors, whose sum is σ = 164366552. Its totient is φ = 164366550.

The previous prime is 164366497. The next prime is 164366561. The reversal of 164366551 is 155663461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164366551 - 2⁹ = 164366039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164366551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164366561) 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, 82183275 + 82183276.

It is an arithmetic number, because the mean of its divisors is an integer number (82183276).

Almost surely, 2^164366551 is an apocalyptic number.

164366551 is a deficient number, since it is larger than the sum of its proper divisors (1).

164366551 is an equidigital number, since it uses as much as digits as its factorization.

164366551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 164366551 is about 12820.5518991969. The cubic root of 164366551 is about 547.7778671958. Note that the first 3 decimals are identical.

The spelling of 164366551 in words is "one hundred sixty-four million, three hundred sixty-six thousand, five hundred fifty-one".