2261143 has 2 divisors, whose sum is σ = 2261144. Its totient is φ = 2261142.

The previous prime is 2261131. The next prime is 2261173. The reversal of 2261143 is 3411622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2261143 - 2⁵ = 2261111 is a prime.

It is a super-2 number, since 2×2261143² = 10225535332898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2261143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130571 + 1130572.

It is an arithmetic number, because the mean of its divisors is an integer number (1130572).

2^2261143 is an apocalyptic number.

2261143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261143 is an equidigital number, since it uses as much as digits as its factorization.

2261143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 2261143 is about 1503.7097459284. The cubic root of 2261143 is about 131.2530315248.

Adding to 2261143 its reverse (3411622), we get a palindrome (5672765).

It can be divided in two parts, 2261 and 143, that multiplied together give a palindrome (323323).

The spelling of 2261143 in words is "two million, two hundred sixty-one thousand, one hundred forty-three".