165441250 has 40 divisors (see below), whose sum is σ = 333989964. Its totient is φ = 61080000.

The previous prime is 165441239. The next prime is 165441257. The reversal of 165441250 is 52144561.

It can be written as a sum of positive squares in 10 ways, for example, as 28761769 + 136679481 = 5363^2 + 11691^2 .

It is not an unprimeable number, because it can be changed into a prime (165441257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11160 + ... + 21340.

Almost surely, 2^165441250 is an apocalyptic number.

165441250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165441250 is an abundant number, since it is smaller than the sum of its proper divisors (168548714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165441250 is a wasteful number, since it uses less digits than its factorization.

165441250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10216 (or 10201 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 165441250 is about 12862.3967439976. The cubic root of 165441250 is about 548.9691434688.

The spelling of 165441250 in words is "one hundred sixty-five million, four hundred forty-one thousand, two hundred fifty".