40572971 has 2 divisors, whose sum is σ = 40572972. Its totient is φ = 40572970.

The previous prime is 40572953. The next prime is 40573007. The reversal of 40572971 is 17927504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40572971 - 2⁶ = 40572907 is a prime.

It is a Sophie Germain prime.

It is equal to p_2466395 and since 40572971 and 2466395 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40572911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20286485 + 20286486.

It is an arithmetic number, because the mean of its divisors is an integer number (20286486).

Almost surely, 2^40572971 is an apocalyptic number.

40572971 is a deficient number, since it is larger than the sum of its proper divisors (1).

40572971 is an equidigital number, since it uses as much as digits as its factorization.

40572971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 40572971 is about 6369.6915937901. The cubic root of 40572971 is about 343.6203982617.

The spelling of 40572971 in words is "forty million, five hundred seventy-two thousand, nine hundred seventy-one".