165597245 has 16 divisors (see below), whose sum is σ = 217235520. Its totient is φ = 120182400.

The previous prime is 165597241. The next prime is 165597287. The reversal of 165597245 is 542795561.

It is a happy number.

It is not a de Polignac number, because 165597245 - 2² = 165597241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165597196 and 165597205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165597241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25766 + ... + 31544.

It is an arithmetic number, because the mean of its divisors is an integer number (13577220).

Almost surely, 2^165597245 is an apocalyptic number.

It is an amenable number.

165597245 is a deficient number, since it is larger than the sum of its proper divisors (51638275).

165597245 is a wasteful number, since it uses less digits than its factorization.

165597245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6316.

The product of its digits is 378000, while the sum is 44.

The square root of 165597245 is about 12868.4593094900. The cubic root of 165597245 is about 549.1416307616.

The spelling of 165597245 in words is "one hundred sixty-five million, five hundred ninety-seven thousand, two hundred forty-five".