165487499 has 2 divisors, whose sum is σ = 165487500. Its totient is φ = 165487498.

The previous prime is 165487493. The next prime is 165487501. The reversal of 165487499 is 994784561.

It is a strong prime.

It is an emirp because it is prime and its reverse (994784561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165487499 - 2¹² = 165483403 is a prime.

It is a super-2 number, since 2×165487499² = 54772224650550002, which contains 22 as substring.

Together with 165487501, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165487499.

It is not a weakly prime, because it can be changed into another prime (165487493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82743749 + 82743750.

It is an arithmetic number, because the mean of its divisors is an integer number (82743750).

Almost surely, 2^165487499 is an apocalyptic number.

165487499 is a deficient number, since it is larger than the sum of its proper divisors (1).

165487499 is an equidigital number, since it uses as much as digits as its factorization.

165487499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The square root of 165487499 is about 12864.1944559308. The cubic root of 165487499 is about 549.0202933652.

The spelling of 165487499 in words is "one hundred sixty-five million, four hundred eighty-seven thousand, four hundred ninety-nine".