134591257 has 2 divisors, whose sum is σ = 134591258. Its totient is φ = 134591256.

The previous prime is 134591209. The next prime is 134591279. The reversal of 134591257 is 752195431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81432576 + 53158681 = 9024^2 + 7291^2 .

It is a cyclic number.

It is not a de Polignac number, because 134591257 - 2¹¹ = 134589209 is a prime.

It is a super-2 number, since 2×134591257² = 36229612921680098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (134591357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67295628 + 67295629.

It is an arithmetic number, because the mean of its divisors is an integer number (67295629).

Almost surely, 2^134591257 is an apocalyptic number.

It is an amenable number.

134591257 is a deficient number, since it is larger than the sum of its proper divisors (1).

134591257 is an equidigital number, since it uses as much as digits as its factorization.

134591257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 134591257 is about 11601.3472062515. The cubic root of 134591257 is about 512.4745267529.

The spelling of 134591257 in words is "one hundred thirty-four million, five hundred ninety-one thousand, two hundred fifty-seven".