80520401 has 16 divisors (see below), whose sum is σ = 91010304. Its totient is φ = 70682304.

The previous prime is 80520397. The next prime is 80520403. The reversal of 80520401 is 10402508.

It is a cyclic number.

It is not a de Polignac number, because 80520401 - 2² = 80520397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80520403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58220 + ... + 59586.

It is an arithmetic number, because the mean of its divisors is an integer number (5688144).

Almost surely, 2^80520401 is an apocalyptic number.

It is an amenable number.

80520401 is a deficient number, since it is larger than the sum of its proper divisors (10489903).

80520401 is a wasteful number, since it uses less digits than its factorization.

80520401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 80520401 is about 8973.3160537228. The cubic root of 80520401 is about 431.8192277064.

Adding to 80520401 its reverse (10402508), we get a palindrome (90922909).

The spelling of 80520401 in words is "eighty million, five hundred twenty thousand, four hundred one".