1157250247 has 2 divisors, whose sum is σ = 1157250248. Its totient is φ = 1157250246.

The previous prime is 1157250209. The next prime is 1157250251. The reversal of 1157250247 is 7420527511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1157250247 - 2¹¹ = 1157248199 is a prime.

It is a super-2 number, since 2×1157250247² = 2678456268363122018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157250287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578625123 + 578625124.

It is an arithmetic number, because the mean of its divisors is an integer number (578625124).

Almost surely, 2^1157250247 is an apocalyptic number.

1157250247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157250247 is an equidigital number, since it uses as much as digits as its factorization.

1157250247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 1157250247 is about 34018.3810167386. The cubic root of 1157250247 is about 1049.8866837653.

Adding to 1157250247 its reverse (7420527511), we get a palindrome (8577777758).

The spelling of 1157250247 in words is "one billion, one hundred fifty-seven million, two hundred fifty thousand, two hundred forty-seven".