80554421 has 2 divisors, whose sum is σ = 80554422. Its totient is φ = 80554420.

The previous prime is 80554403. The next prime is 80554427. The reversal of 80554421 is 12445508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65383396 + 15171025 = 8086^2 + 3895^2 .

It is a cyclic number.

It is not a de Polignac number, because 80554421 - 2²⁶ = 13445557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80554427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40277210 + 40277211.

It is an arithmetic number, because the mean of its divisors is an integer number (40277211).

Almost surely, 2^80554421 is an apocalyptic number.

It is an amenable number.

80554421 is a deficient number, since it is larger than the sum of its proper divisors (1).

80554421 is an equidigital number, since it uses as much as digits as its factorization.

80554421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 80554421 is about 8975.2114738317. The cubic root of 80554421 is about 431.8800339182.

Adding to 80554421 its reverse (12445508), we get a palindrome (92999929).

The spelling of 80554421 in words is "eighty million, five hundred fifty-four thousand, four hundred twenty-one".