197552857 has 2 divisors, whose sum is σ = 197552858. Its totient is φ = 197552856.

The previous prime is 197552833. The next prime is 197552881. The reversal of 197552857 is 758255791.

It is a balanced prime because it is at equal distance from previous prime (197552833) and next prime (197552881).

It can be written as a sum of positive squares in only one way, i.e., 196448256 + 1104601 = 14016^2 + 1051^2 .

It is an emirp because it is prime and its reverse (758255791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197552857 - 2¹⁹ = 197028569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197552857.

It is not a weakly prime, because it can be changed into another prime (197552897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98776428 + 98776429.

It is an arithmetic number, because the mean of its divisors is an integer number (98776429).

Almost surely, 2^197552857 is an apocalyptic number.

It is an amenable number.

197552857 is a deficient number, since it is larger than the sum of its proper divisors (1).

197552857 is an equidigital number, since it uses as much as digits as its factorization.

197552857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 49.

The square root of 197552857 is about 14055.3497644135. The cubic root of 197552857 is about 582.4085897317.

The spelling of 197552857 in words is "one hundred ninety-seven million, five hundred fifty-two thousand, eight hundred fifty-seven".