134551 has 4 divisors (see below), whose sum is σ = 135432. Its totient is φ = 133672.

The previous prime is 134513. The next prime is 134581. The reversal of 134551 is 155431.

134551 = T₂₉₈ + T₂₉₉ + T₃₀₀.

134551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 134551 - 2⁹ = 134039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (33858).

2¹³⁴⁵⁵¹ is an apocalyptic number.

134551 is the 300-th centered triangular number.

134551 is a deficient number, since it is larger than the sum of its proper divisors (881).

134551 is an equidigital number, since it uses as much as digits as its factorization.

134551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880.

The product of its digits is 300, while the sum is 19.

The square root of 134551 is about 366.8119409180. The cubic root of 134551 is about 51.2423426989.

Adding to 134551 its reverse (155431), we get a palindrome (289982).

It can be divided in two parts, 13455 and 1, that added together give a square (13456 = 116²).

The spelling of 134551 in words is "one hundred thirty-four thousand, five hundred fifty-one".