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97000087 = 325129837
BaseRepresentation
bin1011100100000…
…01101010010111
320202112010002211
411302001222113
5144313000322
613343014251
72255326042
oct562015227
9222463084
1097000087
114a832668
122859a387
1317133202
14cc4dc59
1587b0b77
hex5c81a97

97000087 has 4 divisors (see below), whose sum is σ = 97033176. Its totient is φ = 96967000.

The previous prime is 97000061. The next prime is 97000093. The reversal of 97000087 is 78000079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78000079 = 630112379.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-97000087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97000037) 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 3 ways as a sum of consecutive naturals, for example, 11668 + ... + 18169.

It is an arithmetic number, because the mean of its divisors is an integer number (24258294).

Almost surely, 297000087 is an apocalyptic number.

97000087 is a deficient number, since it is larger than the sum of its proper divisors (33089).

97000087 is a wasteful number, since it uses less digits than its factorization.

97000087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33088.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 97000087 is about 9848.8622185509. The cubic root of 97000087 is about 459.4702265880.

The spelling of 97000087 in words is "ninety-seven million, eighty-seven", and thus it is an aban number and an uban number.

Divisors: 1 3251 29837 97000087