415135221 has 4 divisors (see below), whose sum is σ = 553513632. Its totient is φ = 276756812.

The previous prime is 415135181. The next prime is 415135241. The reversal of 415135221 is 122531514.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 415135221 - 2¹⁰ = 415134197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 415135191 and 415135200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415135241) 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, 69189201 + ... + 69189206.

It is an arithmetic number, because the mean of its divisors is an integer number (138378408).

Almost surely, 2^415135221 is an apocalyptic number.

It is an amenable number.

415135221 is a deficient number, since it is larger than the sum of its proper divisors (138378411).

415135221 is a wasteful number, since it uses less digits than its factorization.

415135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138378410.

The product of its digits is 1200, while the sum is 24.

The square root of 415135221 is about 20374.8673860715. The cubic root of 415135221 is about 745.9845973096.

Adding to 415135221 its reverse (122531514), we get a palindrome (537666735).

The spelling of 415135221 in words is "four hundred fifteen million, one hundred thirty-five thousand, two hundred twenty-one".