40520211 has 4 divisors (see below), whose sum is σ = 54026952. Its totient is φ = 27013472.

The previous prime is 40520167. The next prime is 40520213. The reversal of 40520211 is 11202504.

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 40520211 - 2¹⁵ = 40487443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40520213) 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 3 ways as a sum of consecutive naturals, for example, 6753366 + ... + 6753371.

It is an arithmetic number, because the mean of its divisors is an integer number (13506738).

Almost surely, 2^40520211 is an apocalyptic number.

40520211 is a deficient number, since it is larger than the sum of its proper divisors (13506741).

40520211 is a wasteful number, since it uses less digits than its factorization.

40520211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13506740.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 40520211 is about 6365.5487587481. The cubic root of 40520211 is about 343.4713887464.

Adding to 40520211 its reverse (11202504), we get a palindrome (51722715).

The spelling of 40520211 in words is "forty million, five hundred twenty thousand, two hundred eleven".