71528155 has 8 divisors (see below), whose sum is σ = 86868432. Its totient is φ = 56532768.

The previous prime is 71528147. The next prime is 71528161. The reversal of 71528155 is 55182517.

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 71528155 - 2³ = 71528147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71528155.

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, 85764 + ... + 86593.

It is an arithmetic number, because the mean of its divisors is an integer number (10858554).

Almost surely, 2^71528155 is an apocalyptic number.

71528155 is a deficient number, since it is larger than the sum of its proper divisors (15340277).

71528155 is a wasteful number, since it uses less digits than its factorization.

71528155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172445.

The product of its digits is 14000, while the sum is 34.

The square root of 71528155 is about 8457.4319388334. The cubic root of 71528155 is about 415.1059970209.

The spelling of 71528155 in words is "seventy-one million, five hundred twenty-eight thousand, one hundred fifty-five".