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4000261 is a prime number
BaseRepresentation
bin1111010000101000000101
321112020022211
433100220011
52011002021
6221423421
746000366
oct17205005
97466284
104000261
112292501
12140ab71
13aa0a25
14761b6d
155403e1
hex3d0a05

4000261 has 2 divisors, whose sum is σ = 4000262. Its totient is φ = 4000260.

The previous prime is 4000237. The next prime is 4000267. The reversal of 4000261 is 1620004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 256036 = 1935^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000261 - 27 = 4000133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000130 + 2000131.

It is an arithmetic number, because the mean of its divisors is an integer number (2000131).

Almost surely, 24000261 is an apocalyptic number.

It is an amenable number.

4000261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000261 is an equidigital number, since it uses as much as digits as its factorization.

4000261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4000261 is about 2000.0652489356. The cubic root of 4000261 is about 158.7435577190.

Adding to 4000261 its reverse (1620004), we get a palindrome (5620265).

The spelling of 4000261 in words is "four million, two hundred sixty-one", and thus it is an aban number.