166271652 has 36 divisors (see below), whose sum is σ = 424163740. Its totient is φ = 54914112.

The previous prime is 166271647. The next prime is 166271657. The reversal of 166271652 is 256172661.

It is a happy number.

166271652 is a `hidden beast` number, since 16 + 627 + 16 + 5 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (166271647) and next prime (166271657).

It can be written as a sum of positive squares in 2 ways, for example, as 55264356 + 111007296 = 7434^2 + 10536^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (166271657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17263 + ... + 25110.

Almost surely, 2^166271652 is an apocalyptic number.

166271652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166271652 is an abundant number, since it is smaller than the sum of its proper divisors (257892088).

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

166271652 is a wasteful number, since it uses less digits than its factorization.

166271652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42492 (or 42487 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 166271652 is about 12894.6365594382. The cubic root of 166271652 is about 549.8860943180.

The spelling of 166271652 in words is "one hundred sixty-six million, two hundred seventy-one thousand, six hundred fifty-two".