517542133 has 2 divisors, whose sum is σ = 517542134. Its totient is φ = 517542132.

The previous prime is 517542131. The next prime is 517542247. The reversal of 517542133 is 331245715.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460660369 + 56881764 = 21463^2 + 7542^2 .

It is a cyclic number.

It is not a de Polignac number, because 517542133 - 2¹ = 517542131 is a prime.

Together with 517542131, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 517542095 and 517542104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517542131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258771066 + 258771067.

It is an arithmetic number, because the mean of its divisors is an integer number (258771067).

Almost surely, 2^517542133 is an apocalyptic number.

It is an amenable number.

517542133 is a deficient number, since it is larger than the sum of its proper divisors (1).

517542133 is an equidigital number, since it uses as much as digits as its factorization.

517542133 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 517542133 is about 22749.5523692226. The cubic root of 517542133 is about 802.8761747357.

Adding to 517542133 its reverse (331245715), we get a palindrome (848787848).

The spelling of 517542133 in words is "five hundred seventeen million, five hundred forty-two thousand, one hundred thirty-three".