43520093 has 2 divisors, whose sum is σ = 43520094. Its totient is φ = 43520092.

The previous prime is 43520083. The next prime is 43520131. The reversal of 43520093 is 39002534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34597924 + 8922169 = 5882^2 + 2987^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43520093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43520083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21760046 + 21760047.

It is an arithmetic number, because the mean of its divisors is an integer number (21760047).

Almost surely, 2^43520093 is an apocalyptic number.

It is an amenable number.

43520093 is a deficient number, since it is larger than the sum of its proper divisors (1).

43520093 is an equidigital number, since it uses as much as digits as its factorization.

43520093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 43520093 is about 6596.9760496761. The cubic root of 43520093 is about 351.7466243271.

The spelling of 43520093 in words is "forty-three million, five hundred twenty thousand, ninety-three".