554122421 has 4 divisors (see below), whose sum is σ = 567637644. Its totient is φ = 540607200.

The previous prime is 554122399. The next prime is 554122423. The reversal of 554122421 is 124221455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124221455 = 5 ⋅24844291.

It can be written as a sum of positive squares in 2 ways, for example, as 296872900 + 257249521 = 17230^2 + 16039^2 .

It is a cyclic number.

It is not a de Polignac number, because 554122421 - 2¹⁸ = 553860277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554122423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6757550 + ... + 6757631.

It is an arithmetic number, because the mean of its divisors is an integer number (141909411).

Almost surely, 2^554122421 is an apocalyptic number.

It is an amenable number.

554122421 is a deficient number, since it is larger than the sum of its proper divisors (13515223).

554122421 is a wasteful number, since it uses less digits than its factorization.

554122421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13515222.

The product of its digits is 3200, while the sum is 26.

The square root of 554122421 is about 23539.8050331773. The cubic root of 554122421 is about 821.3631999870.

Adding to 554122421 its reverse (124221455), we get a palindrome (678343876).

The spelling of 554122421 in words is "five hundred fifty-four million, one hundred twenty-two thousand, four hundred twenty-one".