134571557 has 2 divisors, whose sum is σ = 134571558. Its totient is φ = 134571556.

The previous prime is 134571539. The next prime is 134571583. The reversal of 134571557 is 755175431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126540001 + 8031556 = 11249^2 + 2834^2 .

It is a cyclic number.

It is not a de Polignac number, because 134571557 - 2¹⁰ = 134570533 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134571557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134571517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67285778 + 67285779.

It is an arithmetic number, because the mean of its divisors is an integer number (67285779).

Almost surely, 2^134571557 is an apocalyptic number.

It is an amenable number.

134571557 is a deficient number, since it is larger than the sum of its proper divisors (1).

134571557 is an equidigital number, since it uses as much as digits as its factorization.

134571557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73500, while the sum is 38.

The square root of 134571557 is about 11600.4981358561. The cubic root of 134571557 is about 512.4495220560.

The spelling of 134571557 in words is "one hundred thirty-four million, five hundred seventy-one thousand, five hundred fifty-seven".