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87151325 = 524381071
BaseRepresentation
bin1010011000111…
…01001011011101
320001222202010212
411030131023131
5134302320300
612351542205
72105526332
oct514351335
9201882125
1087151325
1145216098
122522a965
1315095441
14b808989
1579b7935
hex531d2dd

87151325 has 12 divisors (see below), whose sum is σ = 110582208. Its totient is φ = 68098800.

The previous prime is 87151321. The next prime is 87151327. The reversal of 87151325 is 52315178.

It is not a de Polignac number, because 87151325 - 22 = 87151321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87151291 and 87151300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87151321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39461 + ... + 41610.

It is an arithmetic number, because the mean of its divisors is an integer number (9215184).

Almost surely, 287151325 is an apocalyptic number.

It is an amenable number.

87151325 is a deficient number, since it is larger than the sum of its proper divisors (23430883).

87151325 is a wasteful number, since it uses less digits than its factorization.

87151325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81124 (or 81119 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 87151325 is about 9335.4874002379. The cubic root of 87151325 is about 443.3615207485.

The spelling of 87151325 in words is "eighty-seven million, one hundred fifty-one thousand, three hundred twenty-five".

Divisors: 1 5 25 43 215 1075 81071 405355 2026775 3486053 17430265 87151325