70157 has 2 divisors, whose sum is σ = 70158. Its totient is φ = 70156.

The previous prime is 70141. The next prime is 70163. The reversal of 70157 is 75107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48841 + 21316 = 221^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 70157 - 2⁴ = 70141 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70157.

It is not a weakly prime, because it can be changed into another prime (70117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35078 + 35079.

It is an arithmetic number, because the mean of its divisors is an integer number (35079).

2⁷⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

70157 is a deficient number, since it is larger than the sum of its proper divisors (1).

70157 is an equidigital number, since it uses as much as digits as its factorization.

70157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 245, while the sum is 20.

The square root of 70157 is about 264.8716670390. The cubic root of 70157 is about 41.2436415054.

Subtracting 70157 from its reverse (75107), we obtain a triangular number (4950 = T₉₉).

The spelling of 70157 in words is "seventy thousand, one hundred fifty-seven".