40243051 has 2 divisors, whose sum is σ = 40243052. Its totient is φ = 40243050.

The previous prime is 40243033. The next prime is 40243057. The reversal of 40243051 is 15034204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40243051 - 2⁵ = 40243019 is a prime.

It is not a weakly prime, because it can be changed into another prime (40243057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121525 + 20121526.

It is an arithmetic number, because the mean of its divisors is an integer number (20121526).

Almost surely, 2^40243051 is an apocalyptic number.

40243051 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243051 is an equidigital number, since it uses as much as digits as its factorization.

40243051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40243051 is about 6343.7410886637. The cubic root of 40243051 is about 342.6864766759.

Adding to 40243051 its reverse (15034204), we get a palindrome (55277255).

The spelling of 40243051 in words is "forty million, two hundred forty-three thousand, fifty-one".