40956521 has 8 divisors (see below), whose sum is σ = 42327744. Its totient is φ = 39599280.

The previous prime is 40956493. The next prime is 40956527. The reversal of 40956521 is 12565904.

It is a happy number.

40956521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40956521 - 2²² = 36762217 is a prime.

It is a super-2 number, since 2×40956521² = 3354873224846882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40956527) 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 in 7 ways as a sum of consecutive naturals, for example, 2636 + ... + 9426.

It is an arithmetic number, because the mean of its divisors is an integer number (5290968).

Almost surely, 2^40956521 is an apocalyptic number.

It is an amenable number.

40956521 is a deficient number, since it is larger than the sum of its proper divisors (1371223).

40956521 is a wasteful number, since it uses less digits than its factorization.

40956521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 40956521 is about 6399.7281973534. The cubic root of 40956521 is about 344.6997906518.

The spelling of 40956521 in words is "forty million, nine hundred fifty-six thousand, five hundred twenty-one".