134557817 has 2 divisors, whose sum is σ = 134557818. Its totient is φ = 134557816.

The previous prime is 134557811. The next prime is 134557847. The reversal of 134557817 is 718755431.

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., 134467216 + 90601 = 11596^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 134557817 - 2⁸ = 134557561 is a prime.

It is a super-2 number, since 2×134557817² = 36211612231610978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (134557811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67278908 + 67278909.

It is an arithmetic number, because the mean of its divisors is an integer number (67278909).

Almost surely, 2^134557817 is an apocalyptic number.

It is an amenable number.

134557817 is a deficient number, since it is larger than the sum of its proper divisors (1).

134557817 is an equidigital number, since it uses as much as digits as its factorization.

134557817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 41.

The square root of 134557817 is about 11599.9059047908. The cubic root of 134557817 is about 512.4320807872.

The spelling of 134557817 in words is "one hundred thirty-four million, five hundred fifty-seven thousand, eight hundred seventeen".