40557017 has 2 divisors, whose sum is σ = 40557018. Its totient is φ = 40557016.

The previous prime is 40557007. The next prime is 40557029. The reversal of 40557017 is 71075504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21381376 + 19175641 = 4624^2 + 4379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40557017 is a prime.

It is not a weakly prime, because it can be changed into another prime (40557007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20278508 + 20278509.

It is an arithmetic number, because the mean of its divisors is an integer number (20278509).

Almost surely, 2^40557017 is an apocalyptic number.

It is an amenable number.

40557017 is a deficient number, since it is larger than the sum of its proper divisors (1).

40557017 is an equidigital number, since it uses as much as digits as its factorization.

40557017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 40557017 is about 6368.4391337281. The cubic root of 40557017 is about 343.5753531787.

The spelling of 40557017 in words is "forty million, five hundred fifty-seven thousand, seventeen".