164453551 has 2 divisors, whose sum is σ = 164453552. Its totient is φ = 164453550.

The previous prime is 164453539. The next prime is 164453557. The reversal of 164453551 is 155354461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164453551 - 2¹¹ = 164451503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164453557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82226775 + 82226776.

It is an arithmetic number, because the mean of its divisors is an integer number (82226776).

Almost surely, 2^164453551 is an apocalyptic number.

164453551 is a deficient number, since it is larger than the sum of its proper divisors (1).

164453551 is an equidigital number, since it uses as much as digits as its factorization.

164453551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 34.

The square root of 164453551 is about 12823.9444399919. The cubic root of 164453551 is about 547.8744972955.

The spelling of 164453551 in words is "one hundred sixty-four million, four hundred fifty-three thousand, five hundred fifty-one".