43143157 has 2 divisors, whose sum is σ = 43143158. Its totient is φ = 43143156.

The previous prime is 43143143. The next prime is 43143169. The reversal of 43143157 is 75134134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23126481 + 20016676 = 4809^2 + 4474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43143157 is a prime.

It is a super-2 number, since 2×43143157² = 3722663991853298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43143137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571578 + 21571579.

It is an arithmetic number, because the mean of its divisors is an integer number (21571579).

Almost surely, 2^43143157 is an apocalyptic number.

It is an amenable number.

43143157 is a deficient number, since it is larger than the sum of its proper divisors (1).

43143157 is an equidigital number, since it uses as much as digits as its factorization.

43143157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 43143157 is about 6568.3450731520. The cubic root of 43143157 is about 350.7281629431.

The spelling of 43143157 in words is "forty-three million, one hundred forty-three thousand, one hundred fifty-seven".