80321477 has 2 divisors, whose sum is σ = 80321478. Its totient is φ = 80321476.

The previous prime is 80321473. The next prime is 80321491. The reversal of 80321477 is 77412308.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41396356 + 38925121 = 6434^2 + 6239^2 .

It is a cyclic number.

It is not a de Polignac number, because 80321477 - 2² = 80321473 is a prime.

It is equal to p_4687061 and since 80321477 and 4687061 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80321473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40160738 + 40160739.

It is an arithmetic number, because the mean of its divisors is an integer number (40160739).

Almost surely, 2^80321477 is an apocalyptic number.

It is an amenable number.

80321477 is a deficient number, since it is larger than the sum of its proper divisors (1).

80321477 is an equidigital number, since it uses as much as digits as its factorization.

80321477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 80321477 is about 8962.2250027546. The cubic root of 80321477 is about 431.4633342862.

The spelling of 80321477 in words is "eighty million, three hundred twenty-one thousand, four hundred seventy-seven".