285196157 has 2 divisors, whose sum is σ = 285196158. Its totient is φ = 285196156.

The previous prime is 285196151. The next prime is 285196183. The reversal of 285196157 is 751691582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258920281 + 26275876 = 16091^2 + 5126^2 .

It is a cyclic number.

It is not a de Polignac number, because 285196157 - 2⁸ = 285195901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285196151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142598078 + 142598079.

It is an arithmetic number, because the mean of its divisors is an integer number (142598079).

Almost surely, 2^285196157 is an apocalyptic number.

It is an amenable number.

285196157 is a deficient number, since it is larger than the sum of its proper divisors (1).

285196157 is an equidigital number, since it uses as much as digits as its factorization.

285196157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 44.

The square root of 285196157 is about 16887.7516857633. The cubic root of 285196157 is about 658.2353818626.

The spelling of 285196157 in words is "two hundred eighty-five million, one hundred ninety-six thousand, one hundred fifty-seven".