40807651 has 2 divisors, whose sum is σ = 40807652. Its totient is φ = 40807650.

The previous prime is 40807643. The next prime is 40807661. The reversal of 40807651 is 15670804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40807651 - 2³ = 40807643 is a prime.

It is not a weakly prime, because it can be changed into another prime (40807601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20403825 + 20403826.

It is an arithmetic number, because the mean of its divisors is an integer number (20403826).

Almost surely, 2^40807651 is an apocalyptic number.

40807651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40807651 is an equidigital number, since it uses as much as digits as its factorization.

40807651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 40807651 is about 6388.0866462502. The cubic root of 40807651 is about 344.2816418706.

The spelling of 40807651 in words is "forty million, eight hundred seven thousand, six hundred fifty-one".