40805503 has 2 divisors, whose sum is σ = 40805504. Its totient is φ = 40805502.

The previous prime is 40805477. The next prime is 40805509. The reversal of 40805503 is 30550804.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40805503 - 2¹³ = 40797311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40805509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20402751 + 20402752.

It is an arithmetic number, because the mean of its divisors is an integer number (20402752).

Almost surely, 2^40805503 is an apocalyptic number.

40805503 is a deficient number, since it is larger than the sum of its proper divisors (1).

40805503 is an equidigital number, since it uses as much as digits as its factorization.

40805503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40805503 is about 6387.9185185786. The cubic root of 40805503 is about 344.2756010921.

The spelling of 40805503 in words is "forty million, eight hundred five thousand, five hundred three".