135396551 has 8 divisors (see below), whose sum is σ = 146695824. Its totient is φ = 124467840.

The previous prime is 135396529. The next prime is 135396553. The reversal of 135396551 is 155693531.

135396551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135396551 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 (135396553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91880 + ... + 93341.

It is an arithmetic number, because the mean of its divisors is an integer number (18336978).

Almost surely, 2^135396551 is an apocalyptic number.

135396551 is a deficient number, since it is larger than the sum of its proper divisors (11299273).

135396551 is a wasteful number, since it uses less digits than its factorization.

135396551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185281.

The product of its digits is 60750, while the sum is 38.

The square root of 135396551 is about 11636.0023633549. The cubic root of 135396551 is about 513.4945838597.

The spelling of 135396551 in words is "one hundred thirty-five million, three hundred ninety-six thousand, five hundred fifty-one".