853617157 has 2 divisors, whose sum is σ = 853617158. Its totient is φ = 853617156.

The previous prime is 853617151. The next prime is 853617179. The reversal of 853617157 is 751716358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824034436 + 29582721 = 28706^2 + 5439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853617157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853617151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426808578 + 426808579.

It is an arithmetic number, because the mean of its divisors is an integer number (426808579).

Almost surely, 2^853617157 is an apocalyptic number.

It is an amenable number.

853617157 is a deficient number, since it is larger than the sum of its proper divisors (1).

853617157 is an equidigital number, since it uses as much as digits as its factorization.

853617157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 43.

The square root of 853617157 is about 29216.7273492429. The cubic root of 853617157 is about 948.6100289677.

The spelling of 853617157 in words is "eight hundred fifty-three million, six hundred seventeen thousand, one hundred fifty-seven".