165850061 has 8 divisors (see below), whose sum is σ = 179973024. Its totient is φ = 151922160.

The previous prime is 165850049. The next prime is 165850063. The reversal of 165850061 is 160058561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165850061 - 2²² = 161655757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165850063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46991 + ... + 50396.

It is an arithmetic number, because the mean of its divisors is an integer number (22496628).

Almost surely, 2^165850061 is an apocalyptic number.

It is an amenable number.

165850061 is a deficient number, since it is larger than the sum of its proper divisors (14122963).

165850061 is a wasteful number, since it uses less digits than its factorization.

165850061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97531.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 165850061 is about 12878.2786505029. The cubic root of 165850061 is about 549.4209453908.

It can be divided in two parts, 1658500 and 61, that added together give a palindrome (1658561).

The spelling of 165850061 in words is "one hundred sixty-five million, eight hundred fifty thousand, sixty-one".