40804051 has 2 divisors, whose sum is σ = 40804052. Its totient is φ = 40804050.

The previous prime is 40804031. The next prime is 40804087. The reversal of 40804051 is 15040804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40804051 - 2²³ = 32415443 is a prime.

It is not a weakly prime, because it can be changed into another prime (40804021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20402025 + 20402026.

It is an arithmetic number, because the mean of its divisors is an integer number (20402026).

Almost surely, 2^40804051 is an apocalyptic number.

40804051 is a deficient number, since it is larger than the sum of its proper divisors (1).

40804051 is an equidigital number, since it uses as much as digits as its factorization.

40804051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40804051 is about 6387.8048655231. The cubic root of 40804051 is about 344.2715175408.

Adding to 40804051 its reverse (15040804), we get a palindrome (55844855).

The spelling of 40804051 in words is "forty million, eight hundred four thousand, fifty-one".