40111061 has 2 divisors, whose sum is σ = 40111062. Its totient is φ = 40111060.

The previous prime is 40111051. The next prime is 40111063. The reversal of 40111061 is 16011104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24940036 + 15171025 = 4994^2 + 3895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40111061 is a prime.

Together with 40111063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40111063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20055530 + 20055531.

It is an arithmetic number, because the mean of its divisors is an integer number (20055531).

Almost surely, 2^40111061 is an apocalyptic number.

It is an amenable number.

40111061 is a deficient number, since it is larger than the sum of its proper divisors (1).

40111061 is an equidigital number, since it uses as much as digits as its factorization.

40111061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 40111061 is about 6333.3293771917. The cubic root of 40111061 is about 342.3114162427.

Adding to 40111061 its reverse (16011104), we get a palindrome (56122165).

The spelling of 40111061 in words is "forty million, one hundred eleven thousand, sixty-one".