2145523141 has 16 divisors (see below), whose sum is σ = 2250547200. Its totient is φ = 2043579888.

The previous prime is 2145523117. The next prime is 2145523223. The reversal of 2145523141 is 1413255412.

It is a cyclic number.

It is not a de Polignac number, because 2145523141 - 2⁷ = 2145523013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145523741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318870 + ... + 325528.

It is an arithmetic number, because the mean of its divisors is an integer number (140659200).

Almost surely, 2^2145523141 is an apocalyptic number.

It is an amenable number.

2145523141 is a deficient number, since it is larger than the sum of its proper divisors (105024059).

2145523141 is a wasteful number, since it uses less digits than its factorization.

2145523141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888.

The product of its digits is 4800, while the sum is 28.

The square root of 2145523141 is about 46319.7921087735. The cubic root of 2145523141 is about 1289.7664262721.

Adding to 2145523141 its reverse (1413255412), we get a palindrome (3558778553).

The spelling of 2145523141 in words is "two billion, one hundred forty-five million, five hundred twenty-three thousand, one hundred forty-one".