80404557 has 8 divisors (see below), whose sum is σ = 107745600. Its totient is φ = 53333280.

The previous prime is 80404553. The next prime is 80404579. The reversal of 80404557 is 75540408.

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

It is not a de Polignac number, because 80404557 - 2² = 80404553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80404553) 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, 66744 + ... + 67937.

It is an arithmetic number, because the mean of its divisors is an integer number (13468200).

Almost surely, 2^80404557 is an apocalyptic number.

It is an amenable number.

80404557 is a deficient number, since it is larger than the sum of its proper divisors (27341043).

80404557 is a wasteful number, since it uses less digits than its factorization.

80404557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134883.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 80404557 is about 8966.8588145459. The cubic root of 80404557 is about 431.6120434619.

The spelling of 80404557 in words is "eighty million, four hundred four thousand, five hundred fifty-seven".