40532021 has 2 divisors, whose sum is σ = 40532022. Its totient is φ = 40532020.

The previous prime is 40531993. The next prime is 40532027. The reversal of 40532021 is 12023504.

40532021 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., 38613796 + 1918225 = 6214^2 + 1385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40532021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40532027) 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, 20266010 + 20266011.

It is an arithmetic number, because the mean of its divisors is an integer number (20266011).

Almost surely, 2^40532021 is an apocalyptic number.

It is an amenable number.

40532021 is a deficient number, since it is larger than the sum of its proper divisors (1).

40532021 is an equidigital number, since it uses as much as digits as its factorization.

40532021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40532021 is about 6366.4763409597. The cubic root of 40532021 is about 343.5047548369.

Adding to 40532021 its reverse (12023504), we get a palindrome (52555525).

The spelling of 40532021 in words is "forty million, five hundred thirty-two thousand, twenty-one".