165058531 has 16 divisors (see below), whose sum is σ = 183109248. Its totient is φ = 147534400.

The previous prime is 165058519. The next prime is 165058541. The reversal of 165058531 is 135850561.

It is a cyclic number.

It is not a de Polignac number, because 165058531 - 2⁷ = 165058403 is a prime.

It is a super-2 number, since 2×165058531² = 54488637311755922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165058541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316551 + ... + 317071.

It is an arithmetic number, because the mean of its divisors is an integer number (11444328).

Almost surely, 2^165058531 is an apocalyptic number.

165058531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

165058531 is a deficient number, since it is larger than the sum of its proper divisors (18050717).

165058531 is a wasteful number, since it uses less digits than its factorization.

165058531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 165058531 is about 12847.5106927373. The cubic root of 165058531 is about 548.5455023664.

The spelling of 165058531 in words is "one hundred sixty-five million, fifty-eight thousand, five hundred thirty-one".