80535493 has 2 divisors, whose sum is σ = 80535494. Its totient is φ = 80535492.

The previous prime is 80535491. The next prime is 80535503. The reversal of 80535493 is 39453508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67125249 + 13410244 = 8193^2 + 3662^2 .

It is a cyclic number.

It is not a de Polignac number, because 80535493 - 2¹ = 80535491 is a prime.

Together with 80535491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80535491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40267746 + 40267747.

It is an arithmetic number, because the mean of its divisors is an integer number (40267747).

Almost surely, 2^80535493 is an apocalyptic number.

It is an amenable number.

80535493 is a deficient number, since it is larger than the sum of its proper divisors (1).

80535493 is an equidigital number, since it uses as much as digits as its factorization.

80535493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 80535493 is about 8974.1569520485. The cubic root of 80535493 is about 431.8462047564.

The spelling of 80535493 in words is "eighty million, five hundred thirty-five thousand, four hundred ninety-three".