554428261 has 2 divisors, whose sum is σ = 554428262. Its totient is φ = 554428260.

The previous prime is 554428253. The next prime is 554428291. The reversal of 554428261 is 162824455.

554428261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552485025 + 1943236 = 23505^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 554428261 - 2³ = 554428253 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 554428261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (554428201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277214130 + 277214131.

It is an arithmetic number, because the mean of its divisors is an integer number (277214131).

Almost surely, 2^554428261 is an apocalyptic number.

It is an amenable number.

554428261 is a deficient number, since it is larger than the sum of its proper divisors (1).

554428261 is an equidigital number, since it uses as much as digits as its factorization.

554428261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76800, while the sum is 37.

The square root of 554428261 is about 23546.3003675737. The cubic root of 554428261 is about 821.5142854447.

The spelling of 554428261 in words is "five hundred fifty-four million, four hundred twenty-eight thousand, two hundred sixty-one".