556045121 has 8 divisors (see below), whose sum is σ = 559872000. Its totient is φ = 552228160.

The previous prime is 556045103. The next prime is 556045151. The reversal of 556045121 is 121540655.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556045121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556045151) 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, 135305 + ... + 139353.

It is an arithmetic number, because the mean of its divisors is an integer number (69984000).

Almost surely, 2^556045121 is an apocalyptic number.

It is an amenable number.

556045121 is a deficient number, since it is larger than the sum of its proper divisors (3826879).

556045121 is a wasteful number, since it uses less digits than its factorization.

556045121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 556045121 is about 23580.6090040101. The cubic root of 556045121 is about 822.3120949897.

Adding to 556045121 its reverse (121540655), we get a palindrome (677585776).

The spelling of 556045121 in words is "five hundred fifty-six million, forty-five thousand, one hundred twenty-one".