554840761 has 2 divisors, whose sum is σ = 554840762. Its totient is φ = 554840760.

The previous prime is 554840749. The next prime is 554840777. The reversal of 554840761 is 167048455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318265600 + 236575161 = 17840^2 + 15381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-554840761 is a prime.

It is not a weakly prime, because it can be changed into another prime (554840791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277420380 + 277420381.

It is an arithmetic number, because the mean of its divisors is an integer number (277420381).

Almost surely, 2^554840761 is an apocalyptic number.

It is an amenable number.

554840761 is a deficient number, since it is larger than the sum of its proper divisors (1).

554840761 is an equidigital number, since it uses as much as digits as its factorization.

554840761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 554840761 is about 23555.0580767698. The cubic root of 554840761 is about 821.7179731348.

The spelling of 554840761 in words is "five hundred fifty-four million, eight hundred forty thousand, seven hundred sixty-one".