71157443 has 4 divisors (see below), whose sum is σ = 81322800. Its totient is φ = 60992088.

The previous prime is 71157409. The next prime is 71157491. The reversal of 71157443 is 34475117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34475117 = 503 ⋅68539.

It is a cyclic number.

It is not a de Polignac number, because 71157443 - 2⁶ = 71157379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71157043) 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, 5082668 + ... + 5082681.

It is an arithmetic number, because the mean of its divisors is an integer number (20330700).

Almost surely, 2^71157443 is an apocalyptic number.

71157443 is a deficient number, since it is larger than the sum of its proper divisors (10165357).

71157443 is a wasteful number, since it uses less digits than its factorization.

71157443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10165356.

The product of its digits is 11760, while the sum is 32.

The square root of 71157443 is about 8435.4871228637. The cubic root of 71157443 is about 414.3876253957.

The spelling of 71157443 in words is "seventy-one million, one hundred fifty-seven thousand, four hundred forty-three".