135361551 has 16 divisors (see below), whose sum is σ = 198503424. Its totient is φ = 81525984.

The previous prime is 135361547. The next prime is 135361559. The reversal of 135361551 is 155163531.

It is not a de Polignac number, because 135361551 - 2² = 135361547 is a prime.

It is a super-4 number, since 4×135361551⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135361559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35091 + ... + 38756.

It is an arithmetic number, because the mean of its divisors is an integer number (12406464).

Almost surely, 2^135361551 is an apocalyptic number.

135361551 is a deficient number, since it is larger than the sum of its proper divisors (63141873).

135361551 is a wasteful number, since it uses less digits than its factorization.

135361551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73910.

The product of its digits is 6750, while the sum is 30.

The square root of 135361551 is about 11634.4983132063. The cubic root of 135361551 is about 513.4503339406.

The spelling of 135361551 in words is "one hundred thirty-five million, three hundred sixty-one thousand, five hundred fifty-one".