40221535 has 16 divisors (see below), whose sum is σ = 49222656. Its totient is φ = 31546368.

The previous prime is 40221529. The next prime is 40221557. The reversal of 40221535 is 53512204.

It is a cyclic number.

It is not a de Polignac number, because 40221535 - 2⁹ = 40221023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61269 + ... + 61921.

It is an arithmetic number, because the mean of its divisors is an integer number (3076416).

Almost surely, 2^40221535 is an apocalyptic number.

40221535 is a deficient number, since it is larger than the sum of its proper divisors (9001121).

40221535 is a wasteful number, since it uses less digits than its factorization.

40221535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 40221535 is about 6342.0450171849. The cubic root of 40221535 is about 342.6253931971.

Adding to 40221535 its reverse (53512204), we get a palindrome (93733739).

The spelling of 40221535 in words is "forty million, two hundred twenty-one thousand, five hundred thirty-five".