553200421 has 2 divisors, whose sum is σ = 553200422. Its totient is φ = 553200420.

The previous prime is 553200407. The next prime is 553200457. The reversal of 553200421 is 124002355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364275396 + 188925025 = 19086^2 + 13745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553200421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 553200392 and 553200401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553240421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276600210 + 276600211.

It is an arithmetic number, because the mean of its divisors is an integer number (276600211).

Almost surely, 2^553200421 is an apocalyptic number.

It is an amenable number.

553200421 is a deficient number, since it is larger than the sum of its proper divisors (1).

553200421 is an equidigital number, since it uses as much as digits as its factorization.

553200421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 553200421 is about 23520.2130304978. The cubic root of 553200421 is about 820.9073938026.

Adding to 553200421 its reverse (124002355), we get a palindrome (677202776).

The spelling of 553200421 in words is "five hundred fifty-three million, two hundred thousand, four hundred twenty-one".