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87504097 = 432034979
BaseRepresentation
bin1010011011100…
…11010011100001
320002122200001111
411031303103201
5134400112342
612403303321
72111525662
oct515632341
9202580044
1087504097
114543713a
122537ab41
1315189b95
14b89b369
157a37217
hex53734e1

87504097 has 4 divisors (see below), whose sum is σ = 89539120. Its totient is φ = 85469076.

The previous prime is 87504089. The next prime is 87504119. The reversal of 87504097 is 79040578.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79040578 = 239520289.

It is a cyclic number.

It is not a de Polignac number, because 87504097 - 23 = 87504089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87504017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017447 + ... + 1017532.

It is an arithmetic number, because the mean of its divisors is an integer number (22384780).

Almost surely, 287504097 is an apocalyptic number.

It is an amenable number.

87504097 is a deficient number, since it is larger than the sum of its proper divisors (2035023).

87504097 is a wasteful number, since it uses less digits than its factorization.

87504097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035022.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 87504097 is about 9354.3624582331. The cubic root of 87504097 is about 443.9589297969.

The spelling of 87504097 in words is "eighty-seven million, five hundred four thousand, ninety-seven".

Divisors: 1 43 2034979 87504097