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201061979 is a prime number
BaseRepresentation
bin10111111101111…
…11011001011011
3112000100000011222
423332333121123
5402432440404
631541242255
74660666346
oct1376773133
9460300158
10201061979
11a3548928
125740338b
13328697b1
141c9bb45d
15129b8dbe
hexbfbf65b

201061979 has 2 divisors, whose sum is σ = 201061980. Its totient is φ = 201061978.

The previous prime is 201061969. The next prime is 201062003. The reversal of 201061979 is 979160102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201061979 - 220 = 200013403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201061969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100530989 + 100530990.

It is an arithmetic number, because the mean of its divisors is an integer number (100530990).

Almost surely, 2201061979 is an apocalyptic number.

201061979 is a deficient number, since it is larger than the sum of its proper divisors (1).

201061979 is an equidigital number, since it uses as much as digits as its factorization.

201061979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 201061979 is about 14179.6325410781. The cubic root of 201061979 is about 585.8368027806.

The spelling of 201061979 in words is "two hundred one million, sixty-one thousand, nine hundred seventy-nine".