1355511257 has 2 divisors, whose sum is σ = 1355511258. Its totient is φ = 1355511256.

The previous prime is 1355511221. The next prime is 1355511293. The reversal of 1355511257 is 7521155531.

It is a balanced prime because it is at equal distance from previous prime (1355511221) and next prime (1355511293).

It can be written as a sum of positive squares in only one way, i.e., 1042256656 + 313254601 = 32284^2 + 17699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355511257 - 2¹² = 1355507161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355511457) 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, 677755628 + 677755629.

It is an arithmetic number, because the mean of its divisors is an integer number (677755629).

Almost surely, 2^1355511257 is an apocalyptic number.

It is an amenable number.

1355511257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355511257 is an equidigital number, since it uses as much as digits as its factorization.

1355511257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26250, while the sum is 35.

The square root of 1355511257 is about 36817.2684619595. The cubic root of 1355511257 is about 1106.7113812657.

Adding to 1355511257 its reverse (7521155531), we get a palindrome (8876666788).

The spelling of 1355511257 in words is "one billion, three hundred fifty-five million, five hundred eleven thousand, two hundred fifty-seven".