40581433 has 2 divisors, whose sum is σ = 40581434. Its totient is φ = 40581432.

The previous prime is 40581427. The next prime is 40581451. The reversal of 40581433 is 33418504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36036009 + 4545424 = 6003^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 40581433 - 2¹³ = 40573241 is a prime.

It is not a weakly prime, because it can be changed into another prime (40581403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20290716 + 20290717.

It is an arithmetic number, because the mean of its divisors is an integer number (20290717).

Almost surely, 2^40581433 is an apocalyptic number.

It is an amenable number.

40581433 is a deficient number, since it is larger than the sum of its proper divisors (1).

40581433 is an equidigital number, since it uses as much as digits as its factorization.

40581433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40581433 is about 6370.3557985406. The cubic root of 40581433 is about 343.6442853768.

Adding to 40581433 its reverse (33418504), we get a palindrome (73999937).

It can be divided in two parts, 40581 and 433, that added together give a palindrome (41014).

The spelling of 40581433 in words is "forty million, five hundred eighty-one thousand, four hundred thirty-three".