80507540 has 12 divisors (see below), whose sum is σ = 169065876. Its totient is φ = 32203008.

The previous prime is 80507501. The next prime is 80507543. The reversal of 80507540 is 4570508.

It can be written as a sum of positive squares in 2 ways, for example, as 32787076 + 47720464 = 5726^2 + 6908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80507543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012669 + ... + 2012708.

It is an arithmetic number, because the mean of its divisors is an integer number (14088823).

Almost surely, 2^80507540 is an apocalyptic number.

It is an amenable number.

80507540 is an abundant number, since it is smaller than the sum of its proper divisors (88558336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80507540 is a wasteful number, since it uses less digits than its factorization.

80507540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025386 (or 4025384 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 80507540 is about 8972.5994003967. The cubic root of 80507540 is about 431.7962359232.

The spelling of 80507540 in words is "eighty million, five hundred seven thousand, five hundred forty".