551101320 has 480 divisors, whose sum is σ = 2359558080. Its totient is φ = 112078080.

The previous prime is 551101307. The next prime is 551101333. The reversal of 551101320 is 23101155.

It is an interprime number because it is at equal distance from previous prime (551101307) and next prime (551101333).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 551101293 and 551101302.

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 119 ways as a sum of consecutive naturals, for example, 11725537 + ... + 11725583.

It is an arithmetic number, because the mean of its divisors is an integer number (4915746).

Almost surely, 2^551101320 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 551101320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179779040).

551101320 is an abundant number, since it is smaller than the sum of its proper divisors (1808456760).

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

551101320 is a wasteful number, since it uses less digits than its factorization.

551101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 551101320 is about 23475.5472779656. The cubic root of 551101320 is about 819.8677756263.

Adding to 551101320 its reverse (23101155), we get a palindrome (574202475).

The spelling of 551101320 in words is "five hundred fifty-one million, one hundred one thousand, three hundred twenty".