135540651 has 4 divisors (see below), whose sum is σ = 180720872. Its totient is φ = 90360432.

The previous prime is 135540637. The next prime is 135540653. The reversal of 135540651 is 156045531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156045531 = 3 ⋅52015177.

It is not a de Polignac number, because 135540651 - 2¹³ = 135532459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135540653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22590106 + ... + 22590111.

It is an arithmetic number, because the mean of its divisors is an integer number (45180218).

Almost surely, 2^135540651 is an apocalyptic number.

135540651 is a deficient number, since it is larger than the sum of its proper divisors (45180221).

135540651 is an equidigital number, since it uses as much as digits as its factorization.

135540651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45180220.

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

The square root of 135540651 is about 11642.1927058437. The cubic root of 135540651 is about 513.6766868112.

The spelling of 135540651 in words is "one hundred thirty-five million, five hundred forty thousand, six hundred fifty-one".