40323553 has 2 divisors, whose sum is σ = 40323554. Its totient is φ = 40323552.

The previous prime is 40323511. The next prime is 40323559. The reversal of 40323553 is 35532304.

It is a happy number.

40323553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30382144 + 9941409 = 5512^2 + 3153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40323553 is a prime.

It is not a weakly prime, because it can be changed into another prime (40323559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20161776 + 20161777.

It is an arithmetic number, because the mean of its divisors is an integer number (20161777).

Almost surely, 2^40323553 is an apocalyptic number.

It is an amenable number.

40323553 is a deficient number, since it is larger than the sum of its proper divisors (1).

40323553 is an equidigital number, since it uses as much as digits as its factorization.

40323553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 40323553 is about 6350.0829128445. The cubic root of 40323553 is about 342.9148272569.

Adding to 40323553 its reverse (35532304), we get a palindrome (75855857).

The spelling of 40323553 in words is "forty million, three hundred twenty-three thousand, five hundred fifty-three".