135350821 has 8 divisors (see below), whose sum is σ = 143432640. Its totient is φ = 127282368.

The previous prime is 135350819. The next prime is 135350861. The reversal of 135350821 is 128053531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135350821 - 2¹ = 135350819 is a prime.

It is a super-4 number, since 4×135350821⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135350821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135350861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23950 + ... + 29056.

It is an arithmetic number, because the mean of its divisors is an integer number (17929080).

Almost surely, 2^135350821 is an apocalyptic number.

It is an amenable number.

135350821 is a deficient number, since it is larger than the sum of its proper divisors (8081819).

135350821 is a wasteful number, since it uses less digits than its factorization.

135350821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6683.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 135350821 is about 11634.0371754606. The cubic root of 135350821 is about 513.4367666521.

The spelling of 135350821 in words is "one hundred thirty-five million, three hundred fifty thousand, eight hundred twenty-one".