164207503 has 2 divisors, whose sum is σ = 164207504. Its totient is φ = 164207502.

The previous prime is 164207489. The next prime is 164207513. The reversal of 164207503 is 305702461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164207503 - 2¹⁷ = 164076431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164207513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82103751 + 82103752.

It is an arithmetic number, because the mean of its divisors is an integer number (82103752).

Almost surely, 2^164207503 is an apocalyptic number.

164207503 is a deficient number, since it is larger than the sum of its proper divisors (1).

164207503 is an equidigital number, since it uses as much as digits as its factorization.

164207503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 164207503 is about 12814.3475448421. The cubic root of 164207503 is about 547.6011258615.

Adding to 164207503 its reverse (305702461), we get a palindrome (469909964).

The spelling of 164207503 in words is "one hundred sixty-four million, two hundred seven thousand, five hundred three".