165531463 has 2 divisors, whose sum is σ = 165531464. Its totient is φ = 165531462.

The previous prime is 165531427. The next prime is 165531479. The reversal of 165531463 is 364135561.

It is a strong prime.

It is an emirp because it is prime and its reverse (364135561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165531463 - 2²⁵ = 131977031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165531263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82765731 + 82765732.

It is an arithmetic number, because the mean of its divisors is an integer number (82765732).

Almost surely, 2^165531463 is an apocalyptic number.

165531463 is a deficient number, since it is larger than the sum of its proper divisors (1).

165531463 is an equidigital number, since it uses as much as digits as its factorization.

165531463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The square root of 165531463 is about 12865.9031163770. The cubic root of 165531463 is about 549.0689072911.

The spelling of 165531463 in words is "one hundred sixty-five million, five hundred thirty-one thousand, four hundred sixty-three".