40551311 has 2 divisors, whose sum is σ = 40551312. Its totient is φ = 40551310.

The previous prime is 40551299. The next prime is 40551319. The reversal of 40551311 is 11315504.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40551311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40551319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20275655 + 20275656.

It is an arithmetic number, because the mean of its divisors is an integer number (20275656).

Almost surely, 2^40551311 is an apocalyptic number.

40551311 is a deficient number, since it is larger than the sum of its proper divisors (1).

40551311 is an equidigital number, since it uses as much as digits as its factorization.

40551311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 40551311 is about 6367.9911275064. The cubic root of 40551311 is about 343.5592397902.

Adding to 40551311 its reverse (11315504), we get a palindrome (51866815).

The spelling of 40551311 in words is "forty million, five hundred fifty-one thousand, three hundred eleven".