80948505 has 32 divisors (see below), whose sum is σ = 142363008. Its totient is φ = 38950400.

The previous prime is 80948503. The next prime is 80948519. The reversal of 80948505 is 50584908.

It is not a de Polignac number, because 80948505 - 2¹ = 80948503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80948501) 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 31 ways as a sum of consecutive naturals, for example, 20815 + ... + 24395.

It is an arithmetic number, because the mean of its divisors is an integer number (4448844).

Almost surely, 2^80948505 is an apocalyptic number.

It is an amenable number.

80948505 is a deficient number, since it is larger than the sum of its proper divisors (61414503).

80948505 is a wasteful number, since it uses less digits than its factorization.

80948505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 80948505 is about 8997.1387118350. The cubic root of 80948505 is about 432.5831619741.

The spelling of 80948505 in words is "eighty million, nine hundred forty-eight thousand, five hundred five".