134513257 has 2 divisors, whose sum is σ = 134513258. Its totient is φ = 134513256.

The previous prime is 134513233. The next prime is 134513261. The reversal of 134513257 is 752315431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 26020201 = 10416^2 + 5101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134513257 is a prime.

It is not a weakly prime, because it can be changed into another prime (134513297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67256628 + 67256629.

It is an arithmetic number, because the mean of its divisors is an integer number (67256629).

Almost surely, 2^134513257 is an apocalyptic number.

It is an amenable number.

134513257 is a deficient number, since it is larger than the sum of its proper divisors (1).

134513257 is an equidigital number, since it uses as much as digits as its factorization.

134513257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 31.

The square root of 134513257 is about 11597.9850405146. The cubic root of 134513257 is about 512.3755090843.

Adding to 134513257 its reverse (752315431), we get a palindrome (886828688).

The spelling of 134513257 in words is "one hundred thirty-four million, five hundred thirteen thousand, two hundred fifty-seven".