555401121 has 32 divisors (see below), whose sum is σ = 827698176. Its totient is φ = 328440000.

The previous prime is 555401113. The next prime is 555401137. The reversal of 555401121 is 121104555.

555401121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 555401121 - 2³ = 555401113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 555401091 and 555401100.

It is not an unprimeable number, because it can be changed into a prime (555401111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235470 + ... + 237816.

It is an arithmetic number, because the mean of its divisors is an integer number (25865568).

Almost surely, 2^555401121 is an apocalyptic number.

It is an amenable number.

555401121 is a deficient number, since it is larger than the sum of its proper divisors (272297055).

555401121 is a wasteful number, since it uses less digits than its factorization.

555401121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 555401121 is about 23566.9497602044. The cubic root of 555401121 is about 821.9945107110.

Adding to 555401121 its reverse (121104555), we get a palindrome (676505676).

The spelling of 555401121 in words is "five hundred fifty-five million, four hundred one thousand, one hundred twenty-one".