165635045 has 4 divisors (see below), whose sum is σ = 198762060. Its totient is φ = 132508032.

The previous prime is 165634993. The next prime is 165635053. The reversal of 165635045 is 540536561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74356129 + 91278916 = 8623^2 + 9554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165635045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165634996 and 165635014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16563500 + ... + 16563509.

It is an arithmetic number, because the mean of its divisors is an integer number (49690515).

Almost surely, 2^165635045 is an apocalyptic number.

It is an amenable number.

165635045 is a deficient number, since it is larger than the sum of its proper divisors (33127015).

165635045 is an equidigital number, since it uses as much as digits as its factorization.

165635045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33127014.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 165635045 is about 12869.9279329762. The cubic root of 165635045 is about 549.1834107933.

The spelling of 165635045 in words is "one hundred sixty-five million, six hundred thirty-five thousand, forty-five".