40526981 has 16 divisors (see below), whose sum is σ = 46809600. Its totient is φ = 34700400.

The previous prime is 40526977. The next prime is 40526987. The reversal of 40526981 is 18962504.

It is a cyclic number.

It is not a de Polignac number, because 40526981 - 2² = 40526977 is a prime.

It is a super-2 number, since 2×40526981² = 3284872377948722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40526987) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43640 + ... + 44558.

It is an arithmetic number, because the mean of its divisors is an integer number (2925600).

Almost surely, 2^40526981 is an apocalyptic number.

It is an amenable number.

40526981 is a deficient number, since it is larger than the sum of its proper divisors (6282619).

40526981 is a wasteful number, since it uses less digits than its factorization.

40526981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 40526981 is about 6366.0805053031. The cubic root of 40526981 is about 343.4905164176.

The spelling of 40526981 in words is "forty million, five hundred twenty-six thousand, nine hundred eighty-one".