70057 has 8 divisors (see below), whose sum is σ = 80136. Its totient is φ = 60672.

The previous prime is 70051. The next prime is 70061. The reversal of 70057 is 75007.

It can be written as a sum of positive squares in 4 ways, for example, as 361 + 69696 = 19^2 + 264^2 .

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 70057 - 2⁷ = 69929 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63 + ... + 379.

It is an arithmetic number, because the mean of its divisors is an integer number (10017).

2⁷⁰⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

70057 is a deficient number, since it is larger than the sum of its proper divisors (10079).

70057 is a wasteful number, since it uses less digits than its factorization.

70057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347.

The product of its (nonzero) digits is 245, while the sum is 19.

The square root of 70057 is about 264.6828290615. The cubic root of 70057 is about 41.2240363090.

Subtracting 70057 from its reverse (75007), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 700 and 57, that added together give a palindrome (757).

The spelling of 70057 in words is "seventy thousand, fifty-seven".