71124155 has 4 divisors (see below), whose sum is σ = 85348992. Its totient is φ = 56899320.

The previous prime is 71124149. The next prime is 71124169. The reversal of 71124155 is 55142117.

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

It is not a de Polignac number, because 71124155 - 2⁴ = 71124139 is a prime.

It is a Duffinian number.

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, 7112411 + ... + 7112420.

It is an arithmetic number, because the mean of its divisors is an integer number (21337248).

Almost surely, 2^71124155 is an apocalyptic number.

71124155 is a deficient number, since it is larger than the sum of its proper divisors (14224837).

71124155 is a wasteful number, since it uses less digits than its factorization.

71124155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14224836.

The product of its digits is 1400, while the sum is 26.

The square root of 71124155 is about 8433.5137991231. The cubic root of 71124155 is about 414.3229974090.

The spelling of 71124155 in words is "seventy-one million, one hundred twenty-four thousand, one hundred fifty-five".