43143445 has 16 divisors (see below), whose sum is σ = 53829360. Its totient is φ = 33155584.

The previous prime is 43143437. The next prime is 43143461. The reversal of 43143445 is 54434134.

It can be written as a sum of positive squares in 8 ways, for example, as 815409 + 42328036 = 903^2 + 6506^2 .

It is not a de Polignac number, because 43143445 - 2³ = 43143437 is a prime.

It is a super-2 number, since 2×43143445² = 3722713692936050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33147 + ... + 34423.

It is an arithmetic number, because the mean of its divisors is an integer number (3364335).

Almost surely, 2^43143445 is an apocalyptic number.

It is an amenable number.

43143445 is a deficient number, since it is larger than the sum of its proper divisors (10685915).

43143445 is a wasteful number, since it uses less digits than its factorization.

43143445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544.

The product of its digits is 11520, while the sum is 28.

The square root of 43143445 is about 6568.3669964459. The cubic root of 43143445 is about 350.7289433641.

Adding to 43143445 its reverse (54434134), we get a palindrome (97577579).

The spelling of 43143445 in words is "forty-three million, one hundred forty-three thousand, four hundred forty-five".