80550515 has 4 divisors (see below), whose sum is σ = 96660624. Its totient is φ = 64440408.

The previous prime is 80550511. The next prime is 80550529. The reversal of 80550515 is 51505508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80550515 - 2² = 80550511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80550511) 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, 8055047 + ... + 8055056.

It is an arithmetic number, because the mean of its divisors is an integer number (24165156).

Almost surely, 2^80550515 is an apocalyptic number.

80550515 is a deficient number, since it is larger than the sum of its proper divisors (16110109).

80550515 is a wasteful number, since it uses less digits than its factorization.

80550515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16110108.

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 80550515 is about 8974.9938718642. The cubic root of 80550515 is about 431.8730533344.

The spelling of 80550515 in words is "eighty million, five hundred fifty thousand, five hundred fifteen".