40563403 has 2 divisors, whose sum is σ = 40563404. Its totient is φ = 40563402.

The previous prime is 40563349. The next prime is 40563449. The reversal of 40563403 is 30436504.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40563403 is a prime.

It is not a weakly prime, because it can be changed into another prime (40563463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20281701 + 20281702.

It is an arithmetic number, because the mean of its divisors is an integer number (20281702).

Almost surely, 2^40563403 is an apocalyptic number.

40563403 is a deficient number, since it is larger than the sum of its proper divisors (1).

40563403 is an equidigital number, since it uses as much as digits as its factorization.

40563403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40563403 is about 6368.9404927350. The cubic root of 40563403 is about 343.5933850526.

Adding to 40563403 its reverse (30436504), we get a palindrome (70999907).

The spelling of 40563403 in words is "forty million, five hundred sixty-three thousand, four hundred three".