43157369 has 2 divisors, whose sum is σ = 43157370. Its totient is φ = 43157368.

The previous prime is 43157311. The next prime is 43157371. The reversal of 43157369 is 96375134.

It is a happy number.

43157369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29019769 + 14137600 = 5387^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 43157369 - 2¹² = 43153273 is a prime.

It is a super-2 number, since 2×43157369² = 3725116998004322, which contains 22 as substring.

Together with 43157371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43157399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21578684 + 21578685.

It is an arithmetic number, because the mean of its divisors is an integer number (21578685).

Almost surely, 2^43157369 is an apocalyptic number.

It is an amenable number.

43157369 is a deficient number, since it is larger than the sum of its proper divisors (1).

43157369 is an equidigital number, since it uses as much as digits as its factorization.

43157369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 38.

The square root of 43157369 is about 6569.4268395348. The cubic root of 43157369 is about 350.7666704127.

The spelling of 43157369 in words is "forty-three million, one hundred fifty-seven thousand, three hundred sixty-nine".