155511136 has 36 divisors (see below), whose sum is σ = 336534156. Its totient is φ = 70685120.

The previous prime is 155511127. The next prime is 155511149. The reversal of 155511136 is 631115551.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16210 + ... + 23953.

It is an arithmetic number, because the mean of its divisors is an integer number (9348171).

Almost surely, 2^155511136 is an apocalyptic number.

155511136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155511136 is an abundant number, since it is smaller than the sum of its proper divisors (181023020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155511136 is a wasteful number, since it uses less digits than its factorization.

155511136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40195 (or 40176 counting only the distinct ones).

The product of its digits is 2250, while the sum is 28.

The square root of 155511136 is about 12470.4104182661. The cubic root of 155511136 is about 537.7583525276.

Adding to 155511136 its reverse (631115551), we get a palindrome (786626687).

The spelling of 155511136 in words is "one hundred fifty-five million, five hundred eleven thousand, one hundred thirty-six".