80729554 has 8 divisors (see below), whose sum is σ = 121234428. Its totient is φ = 40318080.

The previous prime is 80729543. The next prime is 80729569. The reversal of 80729554 is 45592708.

It can be written as a sum of positive squares in 2 ways, for example, as 80550625 + 178929 = 8975^2 + 423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21147 + ... + 24670.

Almost surely, 2^80729554 is an apocalyptic number.

80729554 is a deficient number, since it is larger than the sum of its proper divisors (40504874).

80729554 is a wasteful number, since it uses less digits than its factorization.

80729554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46700.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 80729554 is about 8984.9626599113. The cubic root of 80729554 is about 432.1927901789.

The spelling of 80729554 in words is "eighty million, seven hundred twenty-nine thousand, five hundred fifty-four".