71057105 has 48 divisors (see below), whose sum is σ = 104775120. Its totient is φ = 46061568.

The previous prime is 71057099. The next prime is 71057123. The reversal of 71057105 is 50175017.

It can be written as a sum of positive squares in 8 ways, for example, as 25921 + 71031184 = 161^2 + 8428^2 .

It is not a de Polignac number, because 71057105 - 2⁸ = 71056849 is a prime.

It is a super-2 number, since 2×71057105² = 10098224341962050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518597 + ... + 518733.

It is an arithmetic number, because the mean of its divisors is an integer number (2182815).

Almost surely, 2^71057105 is an apocalyptic number.

It is an amenable number.

71057105 is a deficient number, since it is larger than the sum of its proper divisors (33718015).

71057105 is a wasteful number, since it uses less digits than its factorization.

71057105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 26.

The square root of 71057105 is about 8429.5376504290. The cubic root of 71057105 is about 414.1927599333.

The spelling of 71057105 in words is "seventy-one million, fifty-seven thousand, one hundred five".