165124601 has 4 divisors (see below), whose sum is σ = 168964752. Its totient is φ = 161284452.

The previous prime is 165124571. The next prime is 165124639. The reversal of 165124601 is 106421561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106421561 = 29 ⋅3669709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165124601 is a prime.

It is a super-2 number, since 2×165124601² = 54532267710818402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165124651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920011 + ... + 1920096.

It is an arithmetic number, because the mean of its divisors is an integer number (42241188).

Almost surely, 2^165124601 is an apocalyptic number.

It is an amenable number.

165124601 is a deficient number, since it is larger than the sum of its proper divisors (3840151).

165124601 is an equidigital number, since it uses as much as digits as its factorization.

165124601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840150.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 165124601 is about 12850.0817507127. The cubic root of 165124601 is about 548.6186836120.

The spelling of 165124601 in words is "one hundred sixty-five million, one hundred twenty-four thousand, six hundred one".