80501969 has 2 divisors, whose sum is σ = 80501970. Its totient is φ = 80501968.

The previous prime is 80501963. The next prime is 80502011. The reversal of 80501969 is 96910508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 30658369 = 7060^2 + 5537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80501969 is a prime.

It is a super-2 number, since 2×80501969² = 12961134025753922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80501963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40250984 + 40250985.

It is an arithmetic number, because the mean of its divisors is an integer number (40250985).

Almost surely, 2^80501969 is an apocalyptic number.

It is an amenable number.

80501969 is a deficient number, since it is larger than the sum of its proper divisors (1).

80501969 is an equidigital number, since it uses as much as digits as its factorization.

80501969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 80501969 is about 8972.2889498723. The cubic root of 80501969 is about 431.7862758113.

The spelling of 80501969 in words is "eighty million, five hundred one thousand, nine hundred sixty-nine".