40551611 has 2 divisors, whose sum is σ = 40551612. Its totient is φ = 40551610.

The previous prime is 40551587. The next prime is 40551631. The reversal of 40551611 is 11615504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40551611 - 2¹⁸ = 40289467 is a prime.

It is not a weakly prime, because it can be changed into another prime (40551631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20275805 + 20275806.

It is an arithmetic number, because the mean of its divisors is an integer number (20275806).

Almost surely, 2^40551611 is an apocalyptic number.

40551611 is a deficient number, since it is larger than the sum of its proper divisors (1).

40551611 is an equidigital number, since it uses as much as digits as its factorization.

40551611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 40551611 is about 6368.0146827720. The cubic root of 40551611 is about 343.5600870091.

The spelling of 40551611 in words is "forty million, five hundred fifty-one thousand, six hundred eleven".