135299551 has 12 divisors (see below), whose sum is σ = 143935704. Its totient is φ = 127155600.

The previous prime is 135299519. The next prime is 135299579. The reversal of 135299551 is 155992531.

It is not a de Polignac number, because 135299551 - 2⁵ = 135299519 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 (135299581) 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 11 ways as a sum of consecutive naturals, for example, 45861 + ... + 48721.

It is an arithmetic number, because the mean of its divisors is an integer number (11994642).

Almost surely, 2^135299551 is an apocalyptic number.

135299551 is a deficient number, since it is larger than the sum of its proper divisors (8636153).

135299551 is a wasteful number, since it uses less digits than its factorization.

135299551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030 (or 3011 counting only the distinct ones).

The product of its digits is 60750, while the sum is 40.

The square root of 135299551 is about 11631.8335184097. The cubic root of 135299551 is about 513.3719296423.

The spelling of 135299551 in words is "one hundred thirty-five million, two hundred ninety-nine thousand, five hundred fifty-one".