43157371 has 2 divisors, whose sum is σ = 43157372. Its totient is φ = 43157370.

The previous prime is 43157369. The next prime is 43157383. The reversal of 43157371 is 17375134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43157371 - 2¹ = 43157369 is a prime.

Together with 43157369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (43157311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21578685 + 21578686.

It is an arithmetic number, because the mean of its divisors is an integer number (21578686).

Almost surely, 2^43157371 is an apocalyptic number.

43157371 is a deficient number, since it is larger than the sum of its proper divisors (1).

43157371 is an equidigital number, since it uses as much as digits as its factorization.

43157371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 31.

The square root of 43157371 is about 6569.4269917551. The cubic root of 43157371 is about 350.7666758311.

The spelling of 43157371 in words is "forty-three million, one hundred fifty-seven thousand, three hundred seventy-one".