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87527401 = 138381119
BaseRepresentation
bin1010011011110…
…00111111101001
320002200212000121
411031320333221
5134401334101
612404003241
72111653633
oct515707751
9202625017
1087527401
11454526a5
1225390521
1315197680
14b8a5a53
157a3e0a1
hex5378fe9

87527401 has 8 divisors (see below), whose sum is σ = 95397120. Its totient is φ = 79820112.

The previous prime is 87527399. The next prime is 87527411. The reversal of 87527401 is 10472578.

It is a happy number.

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 87527401 - 21 = 87527399 is a prime.

It is a super-2 number, since 2×875274012 = 15322091851629602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87527411) 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, 39481 + ... + 41638.

It is an arithmetic number, because the mean of its divisors is an integer number (11924640).

Almost surely, 287527401 is an apocalyptic number.

It is an amenable number.

87527401 is a deficient number, since it is larger than the sum of its proper divisors (7869719).

87527401 is a wasteful number, since it uses less digits than its factorization.

87527401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81215.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 87527401 is about 9355.6079973458. The cubic root of 87527401 is about 443.9983378587.

Adding to 87527401 its reverse (10472578), we get a palindrome (97999979).

The spelling of 87527401 in words is "eighty-seven million, five hundred twenty-seven thousand, four hundred one".

Divisors: 1 13 83 1079 81119 1054547 6732877 87527401