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61208001 = 3315115013
BaseRepresentation
bin1110100101111…
…1010111000001
311021011200121000
43221133113001
5111132124001
610023522213
71342154661
oct351372701
9137150530
1061208001
1131606528
12185b9369
13c8b0a6a
1481b41a1
155590a86
hex3a5f5c1

61208001 has 16 divisors (see below), whose sum is σ = 91285120. Its totient is φ = 40532400.

The previous prime is 61207999. The next prime is 61208011. The reversal of 61208001 is 10080216.

It is not a de Polignac number, because 61208001 - 21 = 61207999 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61208011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3430 + ... + 11583.

It is an arithmetic number, because the mean of its divisors is an integer number (5705320).

Almost surely, 261208001 is an apocalyptic number.

It is an amenable number.

61208001 is a deficient number, since it is larger than the sum of its proper divisors (30077119).

61208001 is a wasteful number, since it uses less digits than its factorization.

61208001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15173 (or 15167 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 61208001 is about 7823.5542434369. The cubic root of 61208001 is about 394.0966398689.

Adding to 61208001 its reverse (10080216), we get a palindrome (71288217).

The spelling of 61208001 in words is "sixty-one million, two hundred eight thousand, one".

Divisors: 1 3 9 27 151 453 1359 4077 15013 45039 135117 405351 2266963 6800889 20402667 61208001