80527549 has 4 divisors (see below), whose sum is σ = 80568540. Its totient is φ = 80486560.

The previous prime is 80527537. The next prime is 80527583. The reversal of 80527549 is 94572508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3404025 + 77123524 = 1845^2 + 8782^2 .

It is a cyclic number.

It is not a de Polignac number, because 80527549 - 2¹³ = 80519357 is a prime.

It is a super-2 number, since 2×80527549² = 12969372295894802, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80527049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17392 + ... + 21529.

It is an arithmetic number, because the mean of its divisors is an integer number (20142135).

Almost surely, 2^80527549 is an apocalyptic number.

It is an amenable number.

80527549 is a deficient number, since it is larger than the sum of its proper divisors (40991).

80527549 is a wasteful number, since it uses less digits than its factorization.

80527549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40990.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 80527549 is about 8973.7143368841. The cubic root of 80527549 is about 431.8320052239.

The spelling of 80527549 in words is "eighty million, five hundred twenty-seven thousand, five hundred forty-nine".