551911136 has 48 divisors (see below), whose sum is σ = 1253460096. Its totient is φ = 234312576.

The previous prime is 551911133. The next prime is 551911147. The reversal of 551911136 is 631119155.

551911136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551911133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12455 + ... + 35481.

It is an arithmetic number, because the mean of its divisors is an integer number (26113752).

Almost surely, 2^551911136 is an apocalyptic number.

551911136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551911136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626730048).

551911136 is an abundant number, since it is smaller than the sum of its proper divisors (701548960).

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

551911136 is a wasteful number, since it uses less digits than its factorization.

551911136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23151 (or 23143 counting only the distinct ones).

The product of its digits is 4050, while the sum is 32.

The square root of 551911136 is about 23492.7890213146. The cubic root of 551911136 is about 820.2691640666.

It can be divided in two parts, 55 and 1911136, that added together give a palindrome (1911191).

The spelling of 551911136 in words is "five hundred fifty-one million, nine hundred eleven thousand, one hundred thirty-six".