551380555 has 8 divisors (see below), whose sum is σ = 721807344. Its totient is φ = 401004000.

The previous prime is 551380553. The next prime is 551380559. The reversal of 551380555 is 555083155.

551380555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 551380555 - 2¹ = 551380553 is a prime.

It is a super-3 number, since 3×551380555³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551380553) 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, 5012496 + ... + 5012605.

It is an arithmetic number, because the mean of its divisors is an integer number (90225918).

Almost surely, 2^551380555 is an apocalyptic number.

551380555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551380555 is a deficient number, since it is larger than the sum of its proper divisors (170426789).

551380555 is a wasteful number, since it uses less digits than its factorization.

551380555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10025117.

The product of its (nonzero) digits is 75000, while the sum is 37.

The square root of 551380555 is about 23481.4938834819. The cubic root of 551380555 is about 820.0062239266.

It can be divided in two parts, 5513 and 80555, that added together give a palindrome (86068).

The spelling of 551380555 in words is "five hundred fifty-one million, three hundred eighty thousand, five hundred fifty-five".