134588591 has 2 divisors, whose sum is σ = 134588592. Its totient is φ = 134588590.

The previous prime is 134588569. The next prime is 134588621. The reversal of 134588591 is 195885431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134588591 is a prime.

It is a super-2 number, since 2×134588591² = 36228177654730562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134588561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67294295 + 67294296.

It is an arithmetic number, because the mean of its divisors is an integer number (67294296).

Almost surely, 2^134588591 is an apocalyptic number.

134588591 is a deficient number, since it is larger than the sum of its proper divisors (1).

134588591 is an equidigital number, since it uses as much as digits as its factorization.

134588591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 44.

The square root of 134588591 is about 11601.2323052338. The cubic root of 134588591 is about 512.4711430113.

The spelling of 134588591 in words is "one hundred thirty-four million, five hundred eighty-eight thousand, five hundred ninety-one".