1553215135 has 12 divisors (see below), whose sum is σ = 1967121288. Its totient is φ = 1177172208.

The previous prime is 1553215133. The next prime is 1553215151. The reversal of 1553215135 is 5315123551.

It is not a de Polignac number, because 1553215135 - 2¹ = 1553215133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1553215097 and 1553215106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553215133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428449 + ... + 432058.

It is an arithmetic number, because the mean of its divisors is an integer number (163926774).

Almost surely, 2^1553215135 is an apocalyptic number.

1553215135 is a deficient number, since it is larger than the sum of its proper divisors (413906153).

1553215135 is an equidigital number, since it uses as much as digits as its factorization.

1553215135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860550 (or 860531 counting only the distinct ones).

The product of its digits is 11250, while the sum is 31.

The square root of 1553215135 is about 39410.8504729345. The cubic root of 1553215135 is about 1158.0941591767.

Adding to 1553215135 its reverse (5315123551), we get a palindrome (6868338686).

The spelling of 1553215135 in words is "one billion, five hundred fifty-three million, two hundred fifteen thousand, one hundred thirty-five".