43320457 has 2 divisors, whose sum is σ = 43320458. Its totient is φ = 43320456.

The previous prime is 43320449. The next prime is 43320467. The reversal of 43320457 is 75402334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35390601 + 7929856 = 5949^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 43320457 - 2³ = 43320449 is a prime.

It is a super-3 number, since 3×43320457³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (43320467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21660228 + 21660229.

It is an arithmetic number, because the mean of its divisors is an integer number (21660229).

Almost surely, 2^43320457 is an apocalyptic number.

It is an amenable number.

43320457 is a deficient number, since it is larger than the sum of its proper divisors (1).

43320457 is an equidigital number, since it uses as much as digits as its factorization.

43320457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 43320457 is about 6581.8277856535. The cubic root of 43320457 is about 351.2079540862.

The spelling of 43320457 in words is "forty-three million, three hundred twenty thousand, four hundred fifty-seven".