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85611201 = 31317129127
BaseRepresentation
bin1010001101001…
…01001011000001
312222002111111020
411012211023001
5133404024301
612254540053
72056453224
oct506451301
9188074436
1085611201
1144363a65
1224807629
1314976420
14b5275bb
1577b1436
hex51a52c1

85611201 has 16 divisors (see below), whose sum is σ = 130161024. Its totient is φ = 49584384.

The previous prime is 85611199. The next prime is 85611203. The reversal of 85611201 is 10211658.

It is an interprime number because it is at equal distance from previous prime (85611199) and next prime (85611203).

It is not a de Polignac number, because 85611201 - 21 = 85611199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85611203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63901 + ... + 65226.

It is an arithmetic number, because the mean of its divisors is an integer number (8135064).

Almost surely, 285611201 is an apocalyptic number.

It is an amenable number.

85611201 is a deficient number, since it is larger than the sum of its proper divisors (44549823).

85611201 is a wasteful number, since it uses less digits than its factorization.

85611201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129160.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 85611201 is about 9252.6321119993. The cubic root of 85611201 is about 440.7343127410.

Adding to 85611201 its reverse (10211658), we get a palindrome (95822859).

The spelling of 85611201 in words is "eighty-five million, six hundred eleven thousand, two hundred one".

Divisors: 1 3 13 17 39 51 221 663 129127 387381 1678651 2195159 5035953 6585477 28537067 85611201