80754561 has 12 divisors (see below), whose sum is σ = 116752740. Its totient is φ = 53786880.

The previous prime is 80754547. The next prime is 80754577. The reversal of 80754561 is 16545708.

It can be written as a sum of positive squares in 2 ways, for example, as 64400625 + 16353936 = 8025^2 + 4044^2 .

It is not a de Polignac number, because 80754561 - 2¹⁰ = 80753537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80754581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8121 + ... + 15081.

It is an arithmetic number, because the mean of its divisors is an integer number (9729395).

Almost surely, 2^80754561 is an apocalyptic number.

It is an amenable number.

80754561 is a deficient number, since it is larger than the sum of its proper divisors (35998179).

80754561 is a wasteful number, since it uses less digits than its factorization.

80754561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8256 (or 8253 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 80754561 is about 8986.3541550509. The cubic root of 80754561 is about 432.2374112989.

The spelling of 80754561 in words is "eighty million, seven hundred fifty-four thousand, five hundred sixty-one".