40521256 has 16 divisors (see below), whose sum is σ = 77411700. Its totient is φ = 19878144.

The previous prime is 40521241. The next prime is 40521269. The reversal of 40521256 is 65212504.

It can be written as a sum of positive squares in 2 ways, for example, as 38068900 + 2452356 = 6170^2 + 1566^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40521256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47361 + ... + 48208.

Almost surely, 2^40521256 is an apocalyptic number.

It is an amenable number.

40521256 is a deficient number, since it is larger than the sum of its proper divisors (36890444).

40521256 is a wasteful number, since it uses less digits than its factorization.

40521256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95628 (or 95624 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40521256 is about 6365.6308406944. The cubic root of 40521256 is about 343.4743413842.

The spelling of 40521256 in words is "forty million, five hundred twenty-one thousand, two hundred fifty-six".