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85112053 = 136547081
BaseRepresentation
bin1010001001010…
…11010011110101
312221011010210021
411010223103311
5133242041203
612240125141
72052304045
oct504532365
9187133707
1085112053
1144052a44
12246067b1
1314830180
14b437725
1577135bd
hex512b4f5

85112053 has 4 divisors (see below), whose sum is σ = 91659148. Its totient is φ = 78564960.

The previous prime is 85112009. The next prime is 85112057. The reversal of 85112053 is 35021158.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35021158 = 217510579.

It can be written as a sum of positive squares in 2 ways, for example, as 49028004 + 36084049 = 7002^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 85112053 - 213 = 85103861 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 (85112057) 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, 3273528 + ... + 3273553.

It is an arithmetic number, because the mean of its divisors is an integer number (22914787).

Almost surely, 285112053 is an apocalyptic number.

It is an amenable number.

85112053 is a deficient number, since it is larger than the sum of its proper divisors (6547095).

85112053 is a wasteful number, since it uses less digits than its factorization.

85112053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547094.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 85112053 is about 9225.6193830008. The cubic root of 85112053 is about 439.8760894195.

The spelling of 85112053 in words is "eighty-five million, one hundred twelve thousand, fifty-three".

Divisors: 1 13 6547081 85112053