165357530 has 32 divisors (see below), whose sum is σ = 325987200. Its totient is φ = 60017472.

The previous prime is 165357529. The next prime is 165357547. The reversal of 165357530 is 35753561.

It is a super-2 number, since 2×165357530² = 54686225455401800, which contains 22 as substring.

It is an unprimeable number.

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, 3110 + ... + 18449.

It is an arithmetic number, because the mean of its divisors is an integer number (10187100).

Almost surely, 2^165357530 is an apocalyptic number.

165357530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165357530 is a deficient number, since it is larger than the sum of its proper divisors (160629670).

165357530 is a wasteful number, since it uses less digits than its factorization.

165357530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21638.

The product of its (nonzero) digits is 47250, while the sum is 35.

The square root of 165357530 is about 12859.1418842783. The cubic root of 165357530 is about 548.8765276079.

The spelling of 165357530 in words is "one hundred sixty-five million, three hundred fifty-seven thousand, five hundred thirty".