5154135221 has 4 divisors (see below), whose sum is σ = 5156339244. Its totient is φ = 5151931200.

The previous prime is 5154135211. The next prime is 5154135227. The reversal of 5154135221 is 1225314515.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3095698321 + 2058436900 = 55639^2 + 45370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5154135221 is a prime.

It is a super-3 number, since 3×5154135221³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5154135227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098500 + ... + 1103181.

It is an arithmetic number, because the mean of its divisors is an integer number (1289084811).

Almost surely, 2^5154135221 is an apocalyptic number.

It is an amenable number.

5154135221 is a deficient number, since it is larger than the sum of its proper divisors (2204023).

5154135221 is a wasteful number, since it uses less digits than its factorization.

5154135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204022.

The product of its digits is 6000, while the sum is 29.

The square root of 5154135221 is about 71792.3061407001. The cubic root of 5154135221 is about 1727.3695890574.

Adding to 5154135221 its reverse (1225314515), we get a palindrome (6379449736).

The spelling of 5154135221 in words is "five billion, one hundred fifty-four million, one hundred thirty-five thousand, two hundred twenty-one".