135503215 has 4 divisors (see below), whose sum is σ = 162603864. Its totient is φ = 108402568.

The previous prime is 135503197. The next prime is 135503219. The reversal of 135503215 is 512305531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512305531 = 19 ⋅26963449.

It is a cyclic number.

It is not a de Polignac number, because 135503215 - 2⁷ = 135503087 is a prime.

It is a super-2 number, since 2×135503215² = 36722242550672450, which contains 22 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 135503215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135503219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13550317 + ... + 13550326.

It is an arithmetic number, because the mean of its divisors is an integer number (40650966).

Almost surely, 2^135503215 is an apocalyptic number.

135503215 is a deficient number, since it is larger than the sum of its proper divisors (27100649).

135503215 is an equidigital number, since it uses as much as digits as its factorization.

135503215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27100648.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 135503215 is about 11640.5848220783. The cubic root of 135503215 is about 513.6293903704.

Adding to 135503215 its reverse (512305531), we get a palindrome (647808746).

The spelling of 135503215 in words is "one hundred thirty-five million, five hundred three thousand, two hundred fifteen".