71155120 has 20 divisors (see below), whose sum is σ = 165435840. Its totient is φ = 28462016.

The previous prime is 71155027. The next prime is 71155127. The reversal of 71155120 is 2155117.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×71155120² = 10126102204428800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71155091 and 71155100.

It is not an unprimeable number, because it can be changed into a prime (71155127) 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, 444640 + ... + 444799.

It is an arithmetic number, because the mean of its divisors is an integer number (8271792).

Almost surely, 2^71155120 is an apocalyptic number.

It is an amenable number.

71155120 is an abundant number, since it is smaller than the sum of its proper divisors (94280720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71155120 is a wasteful number, since it uses less digits than its factorization.

71155120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889452 (or 889446 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 71155120 is about 8435.3494296324. The cubic root of 71155120 is about 414.3831159919.

The spelling of 71155120 in words is "seventy-one million, one hundred fifty-five thousand, one hundred twenty".