80421575 has 12 divisors (see below), whose sum is σ = 107394168. Its totient is φ = 59388000.

The previous prime is 80421571. The next prime is 80421589. The reversal of 80421575 is 57512408.

It is not a de Polignac number, because 80421575 - 2² = 80421571 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80421571) 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 11 ways as a sum of consecutive naturals, for example, 123401 + ... + 124050.

It is an arithmetic number, because the mean of its divisors is an integer number (8949514).

Almost surely, 2^80421575 is an apocalyptic number.

80421575 is a deficient number, since it is larger than the sum of its proper divisors (26972593).

80421575 is a wasteful number, since it uses less digits than its factorization.

80421575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247474 (or 247469 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 80421575 is about 8967.8077031123. The cubic root of 80421575 is about 431.6424922153.

The spelling of 80421575 in words is "eighty million, four hundred twenty-one thousand, five hundred seventy-five".