554200121 has 8 divisors (see below), whose sum is σ = 573573000.
Its totient is φ = 534844800.
The previous prime is 554200117. The next prime is 554200139. The reversal of 554200121 is 121002455.
It can be written as a sum of positive squares in 4 ways, for example, as 35271721 + 518928400 = 5939^2 + 22780^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 554200121 - 22 = 554200117 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 554200093 and 554200102.
It is not an unprimeable number, because it can be changed into a prime (554200181) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 119555 + ... + 124103.
It is an arithmetic number, because the mean of its divisors is an integer number (71696625).
Almost surely, 2554200121 is an apocalyptic number.
It is an amenable number.
554200121 is a deficient number, since it is larger than the sum of its proper divisors (19372879).
554200121 is a wasteful number, since it uses less digits than its factorization.
554200121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8779.
The product of its (nonzero) digits is 400, while the sum is 20.
The square root of 554200121 is about 23541.4553713232.
The cubic root of 554200121 is about 821.4015891801.
Adding to 554200121 its reverse (121002455), we get a palindrome (675202576).
The spelling of 554200121 in words is "five hundred fifty-four million, two hundred thousand, one hundred twenty-one".