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2210261 is a prime number
BaseRepresentation
bin1000011011100111010101
311011021220112
420123213111
51031212021
6115212405
724533624
oct10334725
94137815
102210261
11127a669
128a7105
135c5061
144176bb
152d9d5b
hex21b9d5

2210261 has 2 divisors, whose sum is σ = 2210262. Its totient is φ = 2210260.

The previous prime is 2210249. The next prime is 2210267. The reversal of 2210261 is 1620122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2193361 + 16900 = 1481^2 + 130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2210261 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105130 + 1105131.

It is an arithmetic number, because the mean of its divisors is an integer number (1105131).

22210261 is an apocalyptic number.

It is an amenable number.

2210261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210261 is an equidigital number, since it uses as much as digits as its factorization.

2210261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2210261 is about 1486.6946559398. The cubic root of 2210261 is about 130.2610336916.

Adding to 2210261 its reverse (1620122), we get a palindrome (3830383).

The spelling of 2210261 in words is "two million, two hundred ten thousand, two hundred sixty-one".