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91083053 = 312938163
BaseRepresentation
bin1010110110111…
…01000100101101
320100101111110102
411123131010231
5141304124203
613012120445
72154123155
oct533350455
9210344412
1091083053
1147461056
1226606125
1315b40bc9
14c14d765
157ee2888
hex56dd12d

91083053 has 4 divisors (see below), whose sum is σ = 94021248. Its totient is φ = 88144860.

The previous prime is 91083043. The next prime is 91083071. The reversal of 91083053 is 35038019.

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: 35038019 = 279712527.

It is a cyclic number.

It is not a de Polignac number, because 91083053 - 24 = 91083037 is a prime.

It is a super-2 number, since 2×910830532 = 16592245087601618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91083023) 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, 1469051 + ... + 1469112.

It is an arithmetic number, because the mean of its divisors is an integer number (23505312).

Almost surely, 291083053 is an apocalyptic number.

It is an amenable number.

91083053 is a deficient number, since it is larger than the sum of its proper divisors (2938195).

91083053 is a wasteful number, since it uses less digits than its factorization.

91083053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938194.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 91083053 is about 9543.7441813997. The cubic root of 91083053 is about 449.9309408427.

The spelling of 91083053 in words is "ninety-one million, eighty-three thousand, fifty-three".

Divisors: 1 31 2938163 91083053