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87252851 = 729429817
BaseRepresentation
bin1010011001101…
…01111101110011
320002011220102002
411030311331303
5134314042401
612354044215
72106431330
oct514657563
9202156362
1087252851
11452853a4
122527966b
13150cc70a
14b833987
1579d7a6b
hex5335f73

87252851 has 8 divisors (see below), whose sum is σ = 103156320. Its totient is φ = 72209088.

The previous prime is 87252839. The next prime is 87252853. The reversal of 87252851 is 15825278.

It is a happy number.

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

It is not a de Polignac number, because 87252851 - 218 = 86990707 is a prime.

It is a super-2 number, since 2×872528512 = 15226120015256402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87252853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214706 + ... + 215111.

It is an arithmetic number, because the mean of its divisors is an integer number (12894540).

Almost surely, 287252851 is an apocalyptic number.

87252851 is a deficient number, since it is larger than the sum of its proper divisors (15903469).

87252851 is a wasteful number, since it uses less digits than its factorization.

87252851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429853.

The product of its digits is 44800, while the sum is 38.

The square root of 87252851 is about 9340.9234554192. The cubic root of 87252851 is about 443.5336170191.

The spelling of 87252851 in words is "eighty-seven million, two hundred fifty-two thousand, eight hundred fifty-one".

Divisors: 1 7 29 203 429817 3008719 12464693 87252851