71280355 has 8 divisors (see below), whose sum is σ = 86082192. Its totient is φ = 56660448.

The previous prime is 71280331. The next prime is 71280361. The reversal of 71280355 is 55308217.

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

It is a cyclic number.

It is not a de Polignac number, because 71280355 - 2⁷ = 71280227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44617 + ... + 46186.

It is an arithmetic number, because the mean of its divisors is an integer number (10760274).

Almost surely, 2^71280355 is an apocalyptic number.

71280355 is a deficient number, since it is larger than the sum of its proper divisors (14801837).

71280355 is a wasteful number, since it uses less digits than its factorization.

71280355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90965.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 71280355 is about 8442.7693916155. The cubic root of 71280355 is about 414.6260821273.

The spelling of 71280355 in words is "seventy-one million, two hundred eighty thousand, three hundred fifty-five".