43312057 has 2 divisors, whose sum is σ = 43312058. Its totient is φ = 43312056.

The previous prime is 43311979. The next prime is 43312067. The reversal of 43312057 is 75021334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42758521 + 553536 = 6539^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 43312057 - 2¹¹ = 43310009 is a prime.

It is not a weakly prime, because it can be changed into another prime (43312067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21656028 + 21656029.

It is an arithmetic number, because the mean of its divisors is an integer number (21656029).

Almost surely, 2^43312057 is an apocalyptic number.

It is an amenable number.

43312057 is a deficient number, since it is larger than the sum of its proper divisors (1).

43312057 is an equidigital number, since it uses as much as digits as its factorization.

43312057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 43312057 is about 6581.1896341011. The cubic root of 43312057 is about 351.1852524365.

The spelling of 43312057 in words is "forty-three million, three hundred twelve thousand, fifty-seven".