165413250 has 48 divisors (see below), whose sum is σ = 447283512. Its totient is φ = 44109600.

The previous prime is 165413249. The next prime is 165413279. The reversal of 165413250 is 52314561.

165413250 is a `hidden beast` number, since 1 + 654 + 1 + 3 + 2 + 5 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 91642329 + 73770921 = 9573^2 + 8589^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34509 + ... + 39008.

Almost surely, 2^165413250 is an apocalyptic number.

165413250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165413250 is an abundant number, since it is smaller than the sum of its proper divisors (281870262).

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

165413250 is a wasteful number, since it uses less digits than its factorization.

165413250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73540 (or 73527 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 165413250 is about 12861.3082538286. The cubic root of 165413250 is about 548.9381717426.

It can be divided in two parts, 16541 and 3250, that added together give a palindrome (19791).

The spelling of 165413250 in words is "one hundred sixty-five million, four hundred thirteen thousand, two hundred fifty".