135506451 has 4 divisors (see below), whose sum is σ = 180675272. Its totient is φ = 90337632.

The previous prime is 135506419. The next prime is 135506453. The reversal of 135506451 is 154605531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 135506451 - 2⁵ = 135506419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135506453) 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 3 ways as a sum of consecutive naturals, for example, 22584406 + ... + 22584411.

It is an arithmetic number, because the mean of its divisors is an integer number (45168818).

Almost surely, 2^135506451 is an apocalyptic number.

135506451 is a deficient number, since it is larger than the sum of its proper divisors (45168821).

135506451 is an equidigital number, since it uses as much as digits as its factorization.

135506451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45168820.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 135506451 is about 11640.7238177014. The cubic root of 135506451 is about 513.6334790593.

The spelling of 135506451 in words is "one hundred thirty-five million, five hundred six thousand, four hundred fifty-one".