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87053087 = 112719447
BaseRepresentation
bin1010011000001…
…01001100011111
320001210202101102
411030011030133
5134241144322
612345503315
72104640042
oct514051437
9201722342
1087053087
1145159300
12251a1b3b
131505c804
14b7c0c59
157998792
hex530531f

87053087 has 6 divisors (see below), whose sum is σ = 95686584. Its totient is φ = 79139060.

The previous prime is 87053077. The next prime is 87053111. The reversal of 87053087 is 78035078.

It is not a de Polignac number, because 87053087 - 28 = 87052831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87053087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87053077) 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 5 ways as a sum of consecutive naturals, for example, 359603 + ... + 359844.

It is an arithmetic number, because the mean of its divisors is an integer number (15947764).

Almost surely, 287053087 is an apocalyptic number.

87053087 is a deficient number, since it is larger than the sum of its proper divisors (8633497).

87053087 is a wasteful number, since it uses less digits than its factorization.

87053087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719469 (or 719458 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 87053087 is about 9330.2243810104. The cubic root of 87053087 is about 443.1948706735.

Subtracting from 87053087 its reverse (78035078), we obtain a square (9018009 = 30032).

The spelling of 87053087 in words is "eighty-seven million, fifty-three thousand, eighty-seven".

Divisors: 1 11 121 719447 7913917 87053087