80780503 has 2 divisors, whose sum is σ = 80780504. Its totient is φ = 80780502.

The previous prime is 80780489. The next prime is 80780519. The reversal of 80780503 is 30508708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80780503 - 2¹³ = 80772311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80780563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40390251 + 40390252.

It is an arithmetic number, because the mean of its divisors is an integer number (40390252).

Almost surely, 2^80780503 is an apocalyptic number.

80780503 is a deficient number, since it is larger than the sum of its proper divisors (1).

80780503 is an equidigital number, since it uses as much as digits as its factorization.

80780503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 80780503 is about 8987.7974498761. The cubic root of 80780503 is about 432.2836910478.

The spelling of 80780503 in words is "eighty million, seven hundred eighty thousand, five hundred three".