135151551 has 8 divisors (see below), whose sum is σ = 200224560. Its totient is φ = 90101016.

The previous prime is 135151517. The next prime is 135151561. The reversal of 135151551 is 155151531.

135151551 is a `hidden beast` number, since 13 + 51 + 51 + 551 = 666.

It is not a de Polignac number, because 135151551 - 2¹⁴ = 135135167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5005613 = 135151551 / (1 + 3 + 5 + 1 + 5 + 1 + 5 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135151561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2502780 + ... + 2502833.

It is an arithmetic number, because the mean of its divisors is an integer number (25028070).

Almost surely, 2^135151551 is an apocalyptic number.

135151551 is a deficient number, since it is larger than the sum of its proper divisors (65073009).

135151551 is an equidigital number, since it uses as much as digits as its factorization.

135151551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005622 (or 5005616 counting only the distinct ones).

The product of its digits is 1875, while the sum is 27.

The square root of 135151551 is about 11625.4699259858. The cubic root of 135151551 is about 513.1846741154.

The spelling of 135151551 in words is "one hundred thirty-five million, one hundred fifty-one thousand, five hundred fifty-one".