2501143 has 2 divisors, whose sum is σ = 2501144. Its totient is φ = 2501142.

The previous prime is 2501137. The next prime is 2501171. The reversal of 2501143 is 3411052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2501143 - 2¹³ = 2492951 is a prime.

It is the 1582-nd Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2501113) by changing a digit.

It is a nontrivial repunit in base 1581.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250571 + 1250572.

It is an arithmetic number, because the mean of its divisors is an integer number (1250572).

2^2501143 is an apocalyptic number.

2501143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501143 is an equidigital number, since it uses as much as digits as its factorization.

2501143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2501143 is about 1581.5002371166. The cubic root of 2501143 is about 135.7415615406.

Adding to 2501143 its reverse (3411052), we get a palindrome (5912195).

Subtracting 2501143 from its reverse (3411052), we obtain a palindrome (909909).

The spelling of 2501143 in words is "two million, five hundred one thousand, one hundred forty-three".