80447257 has 8 divisors (see below), whose sum is σ = 88113312. Its totient is φ = 72840000.

The previous prime is 80447251. The next prime is 80447291. The reversal of 80447257 is 75274408.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80447257 is a prime.

It is a super-2 number, since 2×80447257² = 12943522317648098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80447251) 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, 11808 + ... + 17329.

It is an arithmetic number, because the mean of its divisors is an integer number (11014164).

Almost surely, 2^80447257 is an apocalyptic number.

It is an amenable number.

80447257 is a deficient number, since it is larger than the sum of its proper divisors (7666055).

80447257 is a wasteful number, since it uses less digits than its factorization.

80447257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29399.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 80447257 is about 8969.2394883847. The cubic root of 80447257 is about 431.6884345415.

The spelling of 80447257 in words is "eighty million, four hundred forty-seven thousand, two hundred fifty-seven".