553211421 has 12 divisors (see below), whose sum is σ = 858042432. Its totient is φ = 316120728.

The previous prime is 553211413. The next prime is 553211431. The reversal of 553211421 is 124112355.

It is a happy number.

553211421 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 553211421 - 2³ = 553211413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 553211391 and 553211400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553211411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1881525 + ... + 1881818.

It is an arithmetic number, because the mean of its divisors is an integer number (71503536).

Almost surely, 2^553211421 is an apocalyptic number.

It is an amenable number.

553211421 is a deficient number, since it is larger than the sum of its proper divisors (304831011).

553211421 is a wasteful number, since it uses less digits than its factorization.

553211421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763360 (or 3763353 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 553211421 is about 23520.4468707548. The cubic root of 553211421 is about 820.9128348213.

Adding to 553211421 its reverse (124112355), we get a palindrome (677323776).

The spelling of 553211421 in words is "five hundred fifty-three million, two hundred eleven thousand, four hundred twenty-one".