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85018537 = 227374531
BaseRepresentation
bin1010001000101…
…00011110101001
312220222101111201
411010110132221
5133231043122
612234124201
72051434312
oct504243651
9186871451
1085018537
1143a9975a
1224580661
13147c9736
14b411609
1576e5a27
hex51147a9

85018537 has 4 divisors (see below), whose sum is σ = 85393296. Its totient is φ = 84643780.

The previous prime is 85018487. The next prime is 85018541. The reversal of 85018537 is 73581058.

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.

It is a cyclic number.

It is not a de Polignac number, because 85018537 - 211 = 85016489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85018496 and 85018505.

It is not an unprimeable number, because it can be changed into a prime (85015537) 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, 187039 + ... + 187492.

It is an arithmetic number, because the mean of its divisors is an integer number (21348324).

Almost surely, 285018537 is an apocalyptic number.

It is an amenable number.

85018537 is a deficient number, since it is larger than the sum of its proper divisors (374759).

85018537 is a wasteful number, since it uses less digits than its factorization.

85018537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374758.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 85018537 is about 9220.5497124629. The cubic root of 85018537 is about 439.7149272580.

The spelling of 85018537 in words is "eighty-five million, eighteen thousand, five hundred thirty-seven".

Divisors: 1 227 374531 85018537