40651043 has 2 divisors, whose sum is σ = 40651044. Its totient is φ = 40651042.

The previous prime is 40651033. The next prime is 40651057. The reversal of 40651043 is 34015604.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40651043 - 2⁴ = 40651027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40651033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20325521 + 20325522.

It is an arithmetic number, because the mean of its divisors is an integer number (20325522).

Almost surely, 2^40651043 is an apocalyptic number.

40651043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40651043 is an equidigital number, since it uses as much as digits as its factorization.

40651043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40651043 is about 6375.8170456813. The cubic root of 40651043 is about 343.8406593715.

Adding to 40651043 its reverse (34015604), we get a palindrome (74666647).

The spelling of 40651043 in words is "forty million, six hundred fifty-one thousand, forty-three".