80581601 has 2 divisors, whose sum is σ = 80581602. Its totient is φ = 80581600.

The previous prime is 80581577. The next prime is 80581607. The reversal of 80581601 is 10618508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 30976 = 8975^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 80581601 - 2¹⁸ = 80319457 is a prime.

It is equal to p_4701368 and since 80581601 and 4701368 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (80581607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40290800 + 40290801.

It is an arithmetic number, because the mean of its divisors is an integer number (40290801).

Almost surely, 2^80581601 is an apocalyptic number.

It is an amenable number.

80581601 is a deficient number, since it is larger than the sum of its proper divisors (1).

80581601 is an equidigital number, since it uses as much as digits as its factorization.

80581601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 80581601 is about 8976.7255165790. The cubic root of 80581601 is about 431.9286022409.

The spelling of 80581601 in words is "eighty million, five hundred eighty-one thousand, six hundred one".