80587421 has 2 divisors, whose sum is σ = 80587422. Its totient is φ = 80587420.

The previous prime is 80587393. The next prime is 80587457. The reversal of 80587421 is 12478508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72914521 + 7672900 = 8539^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 80587421 - 2⁶ = 80587357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80587471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40293710 + 40293711.

It is an arithmetic number, because the mean of its divisors is an integer number (40293711).

Almost surely, 2^80587421 is an apocalyptic number.

It is an amenable number.

80587421 is a deficient number, since it is larger than the sum of its proper divisors (1).

80587421 is an equidigital number, since it uses as much as digits as its factorization.

80587421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 80587421 is about 8977.0496823845. The cubic root of 80587421 is about 431.9390006607.

The spelling of 80587421 in words is "eighty million, five hundred eighty-seven thousand, four hundred twenty-one".