551819436 has 96 divisors (see below), whose sum is σ = 1496248320. Its totient is φ = 155041344.

The previous prime is 551819419. The next prime is 551819447. The reversal of 551819436 is 634918155.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 1949751 + ... + 1950033.

It is an arithmetic number, because the mean of its divisors is an integer number (15585920).

Almost surely, 2^551819436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551819436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748124160).

551819436 is an abundant number, since it is smaller than the sum of its proper divisors (944428884).

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

551819436 is a wasteful number, since it uses less digits than its factorization.

551819436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 601 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 551819436 is about 23490.8372775429. The cubic root of 551819436 is about 820.2237323273.

It can be divided in two parts, 551819 and 436, that added together give a palindrome (552255).

The spelling of 551819436 in words is "five hundred fifty-one million, eight hundred nineteen thousand, four hundred thirty-six".