5135550021 has 12 divisors (see below), whose sum is σ = 8477733472. Its totient is φ = 2934599976.

The previous prime is 5135550019. The next prime is 5135550031. The reversal of 5135550021 is 1200555315.

5135550021 is a `hidden beast` number, since 5 + 135 + 5 + 500 + 21 = 666.

It is not a de Polignac number, because 5135550021 - 2¹ = 5135550019 is a prime.

It is a super-3 number, since 3×5135550021³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5135550011) 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 11 ways as a sum of consecutive naturals, for example, 40758271 + ... + 40758396.

Almost surely, 2^5135550021 is an apocalyptic number.

It is an amenable number.

5135550021 is a deficient number, since it is larger than the sum of its proper divisors (3342183451).

5135550021 is a wasteful number, since it uses less digits than its factorization.

5135550021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81516680 (or 81516677 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 5135550021 is about 71662.7519775790. The cubic root of 5135550021 is about 1725.2908585790.

The spelling of 5135550021 in words is "five billion, one hundred thirty-five million, five hundred fifty thousand, twenty-one".