165352557 has 32 divisors (see below), whose sum is σ = 238349952. Its totient is φ = 101597184.

The previous prime is 165352531. The next prime is 165352643. The reversal of 165352557 is 755253561.

It is not a de Polignac number, because 165352557 - 2⁸ = 165352301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165352457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856653 + ... + 856845.

It is an arithmetic number, because the mean of its divisors is an integer number (7448436).

Almost surely, 2^165352557 is an apocalyptic number.

165352557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

165352557 is a deficient number, since it is larger than the sum of its proper divisors (72997395).

165352557 is a wasteful number, since it uses less digits than its factorization.

165352557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its digits is 157500, while the sum is 39.

The square root of 165352557 is about 12858.9485184443. The cubic root of 165352557 is about 548.8710252069.

The spelling of 165352557 in words is "one hundred sixty-five million, three hundred fifty-two thousand, five hundred fifty-seven".