80510979 has 4 divisors (see below), whose sum is σ = 107347976. Its totient is φ = 53673984.

The previous prime is 80510977. The next prime is 80510981. The reversal of 80510979 is 97901508.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (80510977) and next prime (80510981).

It is not a de Polignac number, because 80510979 - 2¹ = 80510977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80510977) 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, 13418494 + ... + 13418499.

It is an arithmetic number, because the mean of its divisors is an integer number (26836994).

Almost surely, 2^80510979 is an apocalyptic number.

80510979 is a deficient number, since it is larger than the sum of its proper divisors (26836997).

80510979 is a wasteful number, since it uses less digits than its factorization.

80510979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26836996.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 80510979 is about 8972.7910373529. The cubic root of 80510979 is about 431.8023841097.

The spelling of 80510979 in words is "eighty million, five hundred ten thousand, nine hundred seventy-nine".