40511011 has 4 divisors (see below), whose sum is σ = 40685112. Its totient is φ = 40336912.

The previous prime is 40510961. The next prime is 40511063. The reversal of 40511011 is 11011504.

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 40511011 - 2²³ = 32122403 is a prime.

It is a super-2 number, since 2×40511011² = 3282284024484242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40510982 and 40511000.

It is not an unprimeable number, because it can be changed into a prime (40512011) 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, 86701 + ... + 87166.

It is an arithmetic number, because the mean of its divisors is an integer number (10171278).

Almost surely, 2^40511011 is an apocalyptic number.

40511011 is a deficient number, since it is larger than the sum of its proper divisors (174101).

40511011 is a wasteful number, since it uses less digits than its factorization.

40511011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174100.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 40511011 is about 6364.8260777495. The cubic root of 40511011 is about 343.4453920411.

Adding to 40511011 its reverse (11011504), we get a palindrome (51522515).

The spelling of 40511011 in words is "forty million, five hundred eleven thousand, eleven".