134005551 has 4 divisors (see below), whose sum is σ = 178674072. Its totient is φ = 89337032.

The previous prime is 134005541. The next prime is 134005583. The reversal of 134005551 is 155500431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155500431 = 3 ⋅51833477.

It is a cyclic number.

It is not a de Polignac number, because 134005551 - 2¹⁷ = 133874479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134005541) 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, 22334256 + ... + 22334261.

It is an arithmetic number, because the mean of its divisors is an integer number (44668518).

Almost surely, 2^134005551 is an apocalyptic number.

134005551 is a deficient number, since it is larger than the sum of its proper divisors (44668521).

134005551 is an equidigital number, since it uses as much as digits as its factorization.

134005551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44668520.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 134005551 is about 11576.0766669887. The cubic root of 134005551 is about 511.7300606990.

Adding to 134005551 its reverse (155500431), we get a palindrome (289505982).

The spelling of 134005551 in words is "one hundred thirty-four million, five thousand, five hundred fifty-one".