40807057 has 2 divisors, whose sum is σ = 40807058. Its totient is φ = 40807056.

The previous prime is 40807007. The next prime is 40807061. The reversal of 40807057 is 75070804.

It is a happy number.

40807057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40398736 + 408321 = 6356^2 + 639^2 .

It is a cyclic number.

It is not a de Polignac number, because 40807057 - 2¹⁵ = 40774289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40807007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20403528 + 20403529.

It is an arithmetic number, because the mean of its divisors is an integer number (20403529).

Almost surely, 2^40807057 is an apocalyptic number.

It is an amenable number.

40807057 is a deficient number, since it is larger than the sum of its proper divisors (1).

40807057 is an equidigital number, since it uses as much as digits as its factorization.

40807057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 40807057 is about 6388.0401532865. The cubic root of 40807057 is about 344.2799713972.

The spelling of 40807057 in words is "forty million, eight hundred seven thousand, fifty-seven".