80257521 has 8 divisors (see below), whose sum is σ = 107182144. Its totient is φ = 53418960.

The previous prime is 80257519. The next prime is 80257537. The reversal of 80257521 is 12575208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80257521 - 2¹ = 80257519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80257591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19306 + ... + 23091.

It is an arithmetic number, because the mean of its divisors is an integer number (13397768).

Almost surely, 2^80257521 is an apocalyptic number.

It is an amenable number.

80257521 is a deficient number, since it is larger than the sum of its proper divisors (26924623).

80257521 is a wasteful number, since it uses less digits than its factorization.

80257521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43031.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 80257521 is about 8958.6562050343. The cubic root of 80257521 is about 431.3487862750.

The spelling of 80257521 in words is "eighty million, two hundred fifty-seven thousand, five hundred twenty-one".