553332421 has 8 divisors (see below), whose sum is σ = 582996320. Its totient is φ = 523722672.

The previous prime is 553332397. The next prime is 553332427. The reversal of 553332421 is 124233355.

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 553332421 - 2¹⁷ = 553201349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 553332421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553332427) 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, 8371 + ... + 34303.

It is an arithmetic number, because the mean of its divisors is an integer number (72874540).

Almost surely, 2^553332421 is an apocalyptic number.

It is an amenable number.

553332421 is a deficient number, since it is larger than the sum of its proper divisors (29663899).

553332421 is a wasteful number, since it uses less digits than its factorization.

553332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27075.

The product of its digits is 10800, while the sum is 28.

The square root of 553332421 is about 23523.0189601590. The cubic root of 553332421 is about 820.9726812671.

Adding to 553332421 its reverse (124233355), we get a palindrome (677565776).

The spelling of 553332421 in words is "five hundred fifty-three million, three hundred thirty-two thousand, four hundred twenty-one".