862157 has 2 divisors, whose sum is σ = 862158. Its totient is φ = 862156.

The previous prime is 862139. The next prime is 862159. The reversal of 862157 is 751268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 212521 = 806^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 862157 - 2⁸ = 861901 is a prime.

Together with 862159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (862159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431078 + 431079.

It is an arithmetic number, because the mean of its divisors is an integer number (431079).

2⁸⁶²¹⁵⁷ is an apocalyptic number.

It is an amenable number.

862157 is a deficient number, since it is larger than the sum of its proper divisors (1).

862157 is an equidigital number, since it uses as much as digits as its factorization.

862157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 862157 is about 928.5240976948. The cubic root of 862157 is about 95.1762931460.

Subtracting from 862157 its reverse (751268), we obtain a square (110889 = 333²).

The spelling of 862157 in words is "eight hundred sixty-two thousand, one hundred fifty-seven".