1553312135 has 8 divisors (see below), whose sum is σ = 1874273856. Its totient is φ = 1235783520.

The previous prime is 1553312129. The next prime is 1553312143. The reversal of 1553312135 is 5312133551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1553312135 - 2¹⁸ = 1553049991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1553312098 and 1553312107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857279 + ... + 859088.

It is an arithmetic number, because the mean of its divisors is an integer number (234284232).

Almost surely, 2^1553312135 is an apocalyptic number.

1553312135 is a deficient number, since it is larger than the sum of its proper divisors (320961721).

1553312135 is a wasteful number, since it uses less digits than its factorization.

1553312135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716553.

The product of its digits is 6750, while the sum is 29.

The square root of 1553312135 is about 39412.0810792833. The cubic root of 1553312135 is about 1158.1182667612.

Adding to 1553312135 its reverse (5312133551), we get a palindrome (6865445686).

The spelling of 1553312135 in words is "one billion, five hundred fifty-three million, three hundred twelve thousand, one hundred thirty-five".