134686553 has 2 divisors, whose sum is σ = 134686554. Its totient is φ = 134686552.

The previous prime is 134686511. The next prime is 134686577. The reversal of 134686553 is 355686431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92006464 + 42680089 = 9592^2 + 6533^2 .

It is a cyclic number.

It is not a de Polignac number, because 134686553 - 2¹⁶ = 134621017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 134686553.

It is not a weakly prime, because it can be changed into another prime (134686753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67343276 + 67343277.

It is an arithmetic number, because the mean of its divisors is an integer number (67343277).

Almost surely, 2^134686553 is an apocalyptic number.

It is an amenable number.

134686553 is a deficient number, since it is larger than the sum of its proper divisors (1).

134686553 is an equidigital number, since it uses as much as digits as its factorization.

134686553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The square root of 134686553 is about 11605.4535887228. The cubic root of 134686553 is about 512.5954490476.

The spelling of 134686553 in words is "one hundred thirty-four million, six hundred eighty-six thousand, five hundred fifty-three".