165543479 has 2 divisors, whose sum is σ = 165543480. Its totient is φ = 165543478.

The previous prime is 165543463. The next prime is 165543493. The reversal of 165543479 is 974345561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165543479 - 2⁴ = 165543463 is a prime.

It is a Chen prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82771739 + 82771740.

It is an arithmetic number, because the mean of its divisors is an integer number (82771740).

Almost surely, 2^165543479 is an apocalyptic number.

165543479 is a deficient number, since it is larger than the sum of its proper divisors (1).

165543479 is an equidigital number, since it uses as much as digits as its factorization.

165543479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 165543479 is about 12866.3700786197. The cubic root of 165543479 is about 549.0821926856.

The spelling of 165543479 in words is "one hundred sixty-five million, five hundred forty-three thousand, four hundred seventy-nine".