554043421 has 2 divisors, whose sum is σ = 554043422. Its totient is φ = 554043420.

The previous prime is 554043367. The next prime is 554043437. The reversal of 554043421 is 124340455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553425625 + 617796 = 23525^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 554043421 - 2⁷ = 554043293 is a prime.

It is a super-2 number, since 2×554043421² = 613928224706766482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 554043421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554043461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277021710 + 277021711.

It is an arithmetic number, because the mean of its divisors is an integer number (277021711).

Almost surely, 2^554043421 is an apocalyptic number.

It is an amenable number.

554043421 is a deficient number, since it is larger than the sum of its proper divisors (1).

554043421 is an equidigital number, since it uses as much as digits as its factorization.

554043421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 554043421 is about 23538.1269645654. The cubic root of 554043421 is about 821.3241648243.

Adding to 554043421 its reverse (124340455), we get a palindrome (678383876).

It can be divided in two parts, 5540434 and 21, that added together give a palindrome (5540455).

The spelling of 554043421 in words is "five hundred fifty-four million, forty-three thousand, four hundred twenty-one".