164556499 has 2 divisors, whose sum is σ = 164556500. Its totient is φ = 164556498.

The previous prime is 164556479. The next prime is 164556503. The reversal of 164556499 is 994655461.

It is a strong prime.

It is an emirp because it is prime and its reverse (994655461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164556499 - 2⁹ = 164555987 is a prime.

It is not a weakly prime, because it can be changed into another prime (164556419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82278249 + 82278250.

It is an arithmetic number, because the mean of its divisors is an integer number (82278250).

Almost surely, 2^164556499 is an apocalyptic number.

164556499 is a deficient number, since it is larger than the sum of its proper divisors (1).

164556499 is an equidigital number, since it uses as much as digits as its factorization.

164556499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 49.

The square root of 164556499 is about 12827.9577096278. The cubic root of 164556499 is about 547.9887966790.

The spelling of 164556499 in words is "one hundred sixty-four million, five hundred fifty-six thousand, four hundred ninety-nine".