40171457 has 2 divisors, whose sum is σ = 40171458. Its totient is φ = 40171456.

The previous prime is 40171447. The next prime is 40171471. The reversal of 40171457 is 75417104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33535681 + 6635776 = 5791^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 40171457 - 2⁶ = 40171393 is a prime.

It is a super-2 number, since 2×40171457² = 3227491915005698, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40171427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20085728 + 20085729.

It is an arithmetic number, because the mean of its divisors is an integer number (20085729).

Almost surely, 2^40171457 is an apocalyptic number.

It is an amenable number.

40171457 is a deficient number, since it is larger than the sum of its proper divisors (1).

40171457 is an equidigital number, since it uses as much as digits as its factorization.

40171457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 40171457 is about 6338.0956919251. The cubic root of 40171457 is about 342.4831383888.

The spelling of 40171457 in words is "forty million, one hundred seventy-one thousand, four hundred fifty-seven".