155403135 has 12 divisors (see below), whose sum is σ = 269365512. Its totient is φ = 82881648.

The previous prime is 155403133. The next prime is 155403151. The reversal of 155403135 is 531304551.

155403135 = 5573² + 5574² + ... + 5577².

It is not a de Polignac number, because 155403135 - 2¹ = 155403133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155403099 and 155403108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155403133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1726657 + ... + 1726746.

It is an arithmetic number, because the mean of its divisors is an integer number (22447126).

Almost surely, 2^155403135 is an apocalyptic number.

155403135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155403135 is a deficient number, since it is larger than the sum of its proper divisors (113962377).

155403135 is a wasteful number, since it uses less digits than its factorization.

155403135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453414 (or 3453411 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 155403135 is about 12466.0793756497. The cubic root of 155403135 is about 537.6338343495.

Adding to 155403135 its reverse (531304551), we get a palindrome (686707686).

The spelling of 155403135 in words is "one hundred fifty-five million, four hundred three thousand, one hundred thirty-five".