135224661 has 32 divisors (see below), whose sum is σ = 212631552. Its totient is φ = 75360960.

The previous prime is 135224641. The next prime is 135224699. The reversal of 135224661 is 166422531.

135224661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135224661 - 2⁵ = 135224629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135224641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163896 + ... + 164718.

It is an arithmetic number, because the mean of its divisors is an integer number (6644736).

Almost surely, 2^135224661 is an apocalyptic number.

135224661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135224661 is a deficient number, since it is larger than the sum of its proper divisors (77406891).

135224661 is a wasteful number, since it uses less digits than its factorization.

135224661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233.

The product of its digits is 8640, while the sum is 30.

The square root of 135224661 is about 11628.6138898839. The cubic root of 135224661 is about 513.2771928916.

The spelling of 135224661 in words is "one hundred thirty-five million, two hundred twenty-four thousand, six hundred sixty-one".