71105457 has 8 divisors (see below), whose sum is σ = 95411776. Its totient is φ = 47101392.

The previous prime is 71105449. The next prime is 71105471. The reversal of 71105457 is 75450117.

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

It is not a de Polignac number, because 71105457 - 2³ = 71105449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71105417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75013 + ... + 75954.

It is an arithmetic number, because the mean of its divisors is an integer number (11926472).

Almost surely, 2^71105457 is an apocalyptic number.

It is an amenable number.

71105457 is a deficient number, since it is larger than the sum of its proper divisors (24306319).

71105457 is a wasteful number, since it uses less digits than its factorization.

71105457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151127.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 71105457 is about 8432.4051729029. The cubic root of 71105457 is about 414.2866867708.

The spelling of 71105457 in words is "seventy-one million, one hundred five thousand, four hundred fifty-seven".