40540263 has 4 divisors (see below), whose sum is σ = 54053688. Its totient is φ = 27026840.

The previous prime is 40540249. The next prime is 40540303. The reversal of 40540263 is 36204504.

40540263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40540263 - 2¹³ = 40532071 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540163) 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 3 ways as a sum of consecutive naturals, for example, 6756708 + ... + 6756713.

It is an arithmetic number, because the mean of its divisors is an integer number (13513422).

Almost surely, 2^40540263 is an apocalyptic number.

40540263 is a deficient number, since it is larger than the sum of its proper divisors (13513425).

40540263 is a wasteful number, since it uses less digits than its factorization.

40540263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13513424.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40540263 is about 6367.1236048941. The cubic root of 40540263 is about 343.5280366294.

Adding to 40540263 its reverse (36204504), we get a palindrome (76744767).

The spelling of 40540263 in words is "forty million, five hundred forty thousand, two hundred sixty-three".