80403257 has 8 divisors (see below), whose sum is σ = 90083712. Its totient is φ = 71118000.

The previous prime is 80403247. The next prime is 80403263. The reversal of 80403257 is 75230408.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 80403257 - 2¹⁶ = 80337721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80403247) 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, 98369 + ... + 99182.

It is an arithmetic number, because the mean of its divisors is an integer number (11260464).

Almost surely, 2^80403257 is an apocalyptic number.

It is an amenable number.

80403257 is a deficient number, since it is larger than the sum of its proper divisors (9680455).

80403257 is a wasteful number, since it uses less digits than its factorization.

80403257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197599.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 80403257 is about 8966.7863251000. The cubic root of 80403257 is about 431.6097173139.

The spelling of 80403257 in words is "eighty million, four hundred three thousand, two hundred fifty-seven".