80749501 has 6 divisors (see below), whose sum is σ = 93933150. Its totient is φ = 69213816.

The previous prime is 80749499. The next prime is 80749519. The reversal of 80749501 is 10594708.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 20702500 = 7749^2 + 4550^2 .

It is not a de Polignac number, because 80749501 - 2¹ = 80749499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80749561) 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 5 ways as a sum of consecutive naturals, for example, 823926 + ... + 824023.

It is an arithmetic number, because the mean of its divisors is an integer number (15655525).

Almost surely, 2^80749501 is an apocalyptic number.

It is an amenable number.

80749501 is a deficient number, since it is larger than the sum of its proper divisors (13183649).

80749501 is a wasteful number, since it uses less digits than its factorization.

80749501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647963 (or 1647956 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 80749501 is about 8986.0726126601. The cubic root of 80749501 is about 432.2283832557.

The spelling of 80749501 in words is "eighty million, seven hundred forty-nine thousand, five hundred one".