40571249 has 2 divisors, whose sum is σ = 40571250. Its totient is φ = 40571248.

The previous prime is 40571233. The next prime is 40571257. The reversal of 40571249 is 94217504.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 628849 = 6320^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 40571249 - 2⁴ = 40571233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40571549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20285624 + 20285625.

It is an arithmetic number, because the mean of its divisors is an integer number (20285625).

Almost surely, 2^40571249 is an apocalyptic number.

It is an amenable number.

40571249 is a deficient number, since it is larger than the sum of its proper divisors (1).

40571249 is an equidigital number, since it uses as much as digits as its factorization.

40571249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 40571249 is about 6369.5564209763. The cubic root of 40571249 is about 343.6155368751.

The spelling of 40571249 in words is "forty million, five hundred seventy-one thousand, two hundred forty-nine".