1197565057 has 4 divisors (see below), whose sum is σ = 1289685460. Its totient is φ = 1105444656.

The previous prime is 1197565049. The next prime is 1197565069. The reversal of 1197565057 is 7505657911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 737719921 + 459845136 = 27161^2 + 21444^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197565057 - 2³ = 1197565049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1197564998 and 1197565016.

It is not an unprimeable number, because it can be changed into a prime (1197565097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46060182 + ... + 46060207.

It is an arithmetic number, because the mean of its divisors is an integer number (322421365).

Almost surely, 2^1197565057 is an apocalyptic number.

It is an amenable number.

1197565057 is a deficient number, since it is larger than the sum of its proper divisors (92120403).

1197565057 is an equidigital number, since it uses as much as digits as its factorization.

1197565057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92120402.

The product of its (nonzero) digits is 330750, while the sum is 46.

The square root of 1197565057 is about 34605.8529298152. The cubic root of 1197565057 is about 1061.9393288648.

The spelling of 1197565057 in words is "one billion, one hundred ninety-seven million, five hundred sixty-five thousand, fifty-seven".