40523533 has 2 divisors, whose sum is σ = 40523534. Its totient is φ = 40523532.

The previous prime is 40523531. The next prime is 40523537. The reversal of 40523533 is 33532504.

It is a happy number.

40523533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37185604 + 3337929 = 6098^2 + 1827^2 .

It is a cyclic number.

It is not a de Polignac number, because 40523533 - 2¹ = 40523531 is a prime.

Together with 40523531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 40523498 and 40523507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40523531) 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, 20261766 + 20261767.

It is an arithmetic number, because the mean of its divisors is an integer number (20261767).

Almost surely, 2^40523533 is an apocalyptic number.

It is an amenable number.

40523533 is a deficient number, since it is larger than the sum of its proper divisors (1).

40523533 is an equidigital number, since it uses as much as digits as its factorization.

40523533 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 40523533 is about 6365.8096892697. The cubic root of 40523533 is about 343.4807748507.

The spelling of 40523533 in words is "forty million, five hundred twenty-three thousand, five hundred thirty-three".