80237509 has 16 divisors (see below), whose sum is σ = 89565696. Its totient is φ = 71265600.

The previous prime is 80237503. The next prime is 80237567. The reversal of 80237509 is 90573208.

It is a cyclic number.

It is not a de Polignac number, because 80237509 - 2⁵ = 80237477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80237503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131884 + ... + 132490.

It is an arithmetic number, because the mean of its divisors is an integer number (5597856).

Almost surely, 2^80237509 is an apocalyptic number.

It is an amenable number.

80237509 is a deficient number, since it is larger than the sum of its proper divisors (9328187).

80237509 is a wasteful number, since it uses less digits than its factorization.

80237509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 80237509 is about 8957.5392268189. The cubic root of 80237509 is about 431.3129314028.

The spelling of 80237509 in words is "eighty million, two hundred thirty-seven thousand, five hundred nine".