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8252161 = 107233331
BaseRepresentation
bin11111011110101100000001
3120112020211121
4133132230001
54103032121
6452512241
7130066531
oct37365401
916466747
108252161
114726a75
12291b681
13192c148
14114b4c1
15ad0141
hex7deb01

8252161 has 8 divisors (see below), whose sum is σ = 8390304. Its totient is φ = 8115360.

The previous prime is 8252149. The next prime is 8252183. The reversal of 8252161 is 1612528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8252161 - 25 = 8252129 is a prime.

It is a super-2 number, since 2×82521612 = 136196322339842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8262161) 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 7 ways as a sum of consecutive naturals, for example, 24766 + ... + 25096.

It is an arithmetic number, because the mean of its divisors is an integer number (1048788).

Almost surely, 28252161 is an apocalyptic number.

8252161 is the 1536-th centered heptagonal number.

It is an amenable number.

8252161 is a deficient number, since it is larger than the sum of its proper divisors (138143).

8252161 is a wasteful number, since it uses less digits than its factorization.

8252161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671.

The product of its digits is 960, while the sum is 25.

The square root of 8252161 is about 2872.6574804526. The cubic root of 8252161 is about 202.0796421569.

Adding to 8252161 its reverse (1612528), we get a palindrome (9864689).

The spelling of 8252161 in words is "eight million, two hundred fifty-two thousand, one hundred sixty-one".

Divisors: 1 107 233 331 24931 35417 77123 8252161