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2041681 is a prime number
BaseRepresentation
bin111110010011101010001
310211201122211
413302131101
51010313211
6111432121
723232265
oct7623521
93751584
102041681
111174a44
12825641
135663c5
143b20a5
152a4e21
hex1f2751

2041681 has 2 divisors, whose sum is σ = 2041682. Its totient is φ = 2041680.

The previous prime is 2041661. The next prime is 2041693. The reversal of 2041681 is 1861402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2016400 + 25281 = 1420^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 2041681 - 27 = 2041553 is a prime.

It is a super-2 number, since 2×20416812 = 8336922611522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2041601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020840 + 1020841.

It is an arithmetic number, because the mean of its divisors is an integer number (1020841).

22041681 is an apocalyptic number.

It is an amenable number.

2041681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2041681 is an equidigital number, since it uses as much as digits as its factorization.

2041681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2041681 is about 1428.8740322366. The cubic root of 2041681 is about 126.8613403884.

The spelling of 2041681 in words is "two million, forty-one thousand, six hundred eighty-one".