554742121 has 2 divisors, whose sum is σ = 554742122. Its totient is φ = 554742120.

The previous prime is 554742091. The next prime is 554742137. The reversal of 554742121 is 121247455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499075600 + 55666521 = 22340^2 + 7461^2 .

It is a cyclic number.

It is not a de Polignac number, because 554742121 - 2¹³ = 554733929 is a prime.

It is not a weakly prime, because it can be changed into another prime (554742191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277371060 + 277371061.

It is an arithmetic number, because the mean of its divisors is an integer number (277371061).

Almost surely, 2^554742121 is an apocalyptic number.

It is an amenable number.

554742121 is a deficient number, since it is larger than the sum of its proper divisors (1).

554742121 is an equidigital number, since it uses as much as digits as its factorization.

554742121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 554742121 is about 23552.9641658964. The cubic root of 554742121 is about 821.6692750396.

Adding to 554742121 its reverse (121247455), we get a palindrome (675989576).

The spelling of 554742121 in words is "five hundred fifty-four million, seven hundred forty-two thousand, one hundred twenty-one".