1173413257 has 2 divisors, whose sum is σ = 1173413258. Its totient is φ = 1173413256.

The previous prime is 1173413249. The next prime is 1173413359. The reversal of 1173413257 is 7523143711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868421961 + 304991296 = 29469^2 + 17464^2 .

It is an emirp because it is prime and its reverse (7523143711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1173413257 - 2³ = 1173413249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1173413957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586706628 + 586706629.

It is an arithmetic number, because the mean of its divisors is an integer number (586706629).

Almost surely, 2^1173413257 is an apocalyptic number.

It is an amenable number.

1173413257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1173413257 is an equidigital number, since it uses as much as digits as its factorization.

1173413257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 34.

The square root of 1173413257 is about 34255.1201574305. The cubic root of 1173413257 is about 1054.7519334698.

Adding to 1173413257 its reverse (7523143711), we get a palindrome (8696556968).

The spelling of 1173413257 in words is "one billion, one hundred seventy-three million, four hundred thirteen thousand, two hundred fifty-seven".