80023521 has 8 divisors (see below), whose sum is σ = 108447424. Its totient is φ = 52474320.

The previous prime is 80023519. The next prime is 80023547. The reversal of 80023521 is 12532008.

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

It is not a de Polignac number, because 80023521 - 2¹ = 80023519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80022521) 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 7 ways as a sum of consecutive naturals, for example, 218461 + ... + 218826.

It is an arithmetic number, because the mean of its divisors is an integer number (13555928).

Almost surely, 2^80023521 is an apocalyptic number.

It is an amenable number.

80023521 is a deficient number, since it is larger than the sum of its proper divisors (28423903).

80023521 is a wasteful number, since it uses less digits than its factorization.

80023521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437351.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 80023521 is about 8945.5866772392. The cubic root of 80023521 is about 430.9291625837.

Adding to 80023521 its reverse (12532008), we get a palindrome (92555529).

The spelling of 80023521 in words is "eighty million, twenty-three thousand, five hundred twenty-one".