165577252 has 6 divisors (see below), whose sum is σ = 289760198. Its totient is φ = 82788624.

The previous prime is 165577249. The next prime is 165577259. The reversal of 165577252 is 252775561.

It can be written as a sum of positive squares in only one way, i.e., 136048896 + 29528356 = 11664^2 + 5434^2 .

It is not an unprimeable number, because it can be changed into a prime (165577259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20697153 + ... + 20697160.

Almost surely, 2^165577252 is an apocalyptic number.

It is an amenable number.

165577252 is a deficient number, since it is larger than the sum of its proper divisors (124182946).

165577252 is a wasteful number, since it uses less digits than its factorization.

165577252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41394317 (or 41394315 counting only the distinct ones).

The product of its digits is 147000, while the sum is 40.

The square root of 165577252 is about 12867.6824642202. The cubic root of 165577252 is about 549.1195300910.

The spelling of 165577252 in words is "one hundred sixty-five million, five hundred seventy-seven thousand, two hundred fifty-two".