554041561 has 2 divisors, whose sum is σ = 554041562. Its totient is φ = 554041560.

The previous prime is 554041547. The next prime is 554041567. The reversal of 554041561 is 165140455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394777161 + 159264400 = 19869^2 + 12620^2 .

It is a cyclic number.

It is not a de Polignac number, because 554041561 - 2¹¹ = 554039513 is a prime.

It is not a weakly prime, because it can be changed into another prime (554041567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277020780 + 277020781.

It is an arithmetic number, because the mean of its divisors is an integer number (277020781).

Almost surely, 2^554041561 is an apocalyptic number.

It is an amenable number.

554041561 is a deficient number, since it is larger than the sum of its proper divisors (1).

554041561 is an equidigital number, since it uses as much as digits as its factorization.

554041561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 554041561 is about 23538.0874541667. The cubic root of 554041561 is about 821.3232457238.

It can be divided in two parts, 55404 and 1561, that added together give a palindrome (56965).

The spelling of 554041561 in words is "five hundred fifty-four million, forty-one thousand, five hundred sixty-one".