40506511 has 2 divisors, whose sum is σ = 40506512. Its totient is φ = 40506510.

The previous prime is 40506497. The next prime is 40506569. The reversal of 40506511 is 11560504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40506511 - 2¹³ = 40498319 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 (40506581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20253255 + 20253256.

It is an arithmetic number, because the mean of its divisors is an integer number (20253256).

Almost surely, 2^40506511 is an apocalyptic number.

40506511 is a deficient number, since it is larger than the sum of its proper divisors (1).

40506511 is an equidigital number, since it uses as much as digits as its factorization.

40506511 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 22.

The square root of 40506511 is about 6364.4725625931. The cubic root of 40506511 is about 343.4326748279.

The spelling of 40506511 in words is "forty million, five hundred six thousand, five hundred eleven".