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87151279 is a prime number
BaseRepresentation
bin1010011000111…
…01001010101111
320001222202002011
411030131022233
5134302320104
612351542051
72105526235
oct514351257
9201882064
1087151279
1145216056
122522a927
1315095407
14b808955
1579b7904
hex531d2af

87151279 has 2 divisors, whose sum is σ = 87151280. Its totient is φ = 87151278.

The previous prime is 87151241. The next prime is 87151321. The reversal of 87151279 is 97215178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87151279 - 213 = 87143087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87154279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43575639 + 43575640.

It is an arithmetic number, because the mean of its divisors is an integer number (43575640).

Almost surely, 287151279 is an apocalyptic number.

87151279 is a deficient number, since it is larger than the sum of its proper divisors (1).

87151279 is an equidigital number, since it uses as much as digits as its factorization.

87151279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 40.

The square root of 87151279 is about 9335.4849365204. The cubic root of 87151279 is about 443.3614427438.

The spelling of 87151279 in words is "eighty-seven million, one hundred fifty-one thousand, two hundred seventy-nine".