1156052257 has 2 divisors, whose sum is σ = 1156052258. Its totient is φ = 1156052256.

The previous prime is 1156052251. The next prime is 1156052273. The reversal of 1156052257 is 7522506511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153349521 + 2702736 = 33961^2 + 1644^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156052257 - 2¹¹ = 1156050209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1156052251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578026128 + 578026129.

It is an arithmetic number, because the mean of its divisors is an integer number (578026129).

Almost surely, 2^1156052257 is an apocalyptic number.

It is an amenable number.

1156052257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156052257 is an equidigital number, since it uses as much as digits as its factorization.

1156052257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 1156052257 is about 34000.7684766095. The cubic root of 1156052257 is about 1049.5242764087.

Adding to 1156052257 its reverse (7522506511), we get a palindrome (8678558768).

The spelling of 1156052257 in words is "one billion, one hundred fifty-six million, fifty-two thousand, two hundred fifty-seven".