553504121 has 8 divisors (see below), whose sum is σ = 575563080. Its totient is φ = 531643392.

The previous prime is 553504109. The next prime is 553504123. The reversal of 553504121 is 121405355.

It can be written as a sum of positive squares in 4 ways, for example, as 16933225 + 536570896 = 4115^2 + 23164^2 .

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-553504121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553504123) 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, 43850 + ... + 55043.

It is an arithmetic number, because the mean of its divisors is an integer number (71945385).

Almost surely, 2^553504121 is an apocalyptic number.

It is an amenable number.

553504121 is a deficient number, since it is larger than the sum of its proper divisors (22058959).

553504121 is a wasteful number, since it uses less digits than its factorization.

553504121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99115.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 553504121 is about 23526.6682936620. The cubic root of 553504121 is about 821.0575888961.

Adding to 553504121 its reverse (121405355), we get a palindrome (674909476).

The spelling of 553504121 in words is "five hundred fifty-three million, five hundred four thousand, one hundred twenty-one".