551541121 has 2 divisors, whose sum is σ = 551541122. Its totient is φ = 551541120.

The previous prime is 551541083. The next prime is 551541163. The reversal of 551541121 is 121145155.

551541121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546858225 + 4682896 = 23385^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 551541121 - 2⁹ = 551540609 is a prime.

It is a super-3 number, since 3×551541121³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (551541821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275770560 + 275770561.

It is an arithmetic number, because the mean of its divisors is an integer number (275770561).

Almost surely, 2^551541121 is an apocalyptic number.

It is an amenable number.

551541121 is a deficient number, since it is larger than the sum of its proper divisors (1).

551541121 is an equidigital number, since it uses as much as digits as its factorization.

551541121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000, while the sum is 25.

The square root of 551541121 is about 23484.9126249173. The cubic root of 551541121 is about 820.0858134464.

Adding to 551541121 its reverse (121145155), we get a palindrome (672686276).

The spelling of 551541121 in words is "five hundred fifty-one million, five hundred forty-one thousand, one hundred twenty-one".