550356656557 has 2 divisors, whose sum is σ = 550356656558. Its totient is φ = 550356656556.

The previous prime is 550356656519. The next prime is 550356656569. The reversal of 550356656557 is 755656653055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382988937321 + 167367719236 = 618861^2 + 409106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550356656557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550356656357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275178328278 + 275178328279.

It is an arithmetic number, because the mean of its divisors is an integer number (275178328279).

Almost surely, 2^550356656557 is an apocalyptic number.

It is an amenable number.

550356656557 is a deficient number, since it is larger than the sum of its proper divisors (1).

550356656557 is an equidigital number, since it uses as much as digits as its factorization.

550356656557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70875000, while the sum is 58.

The spelling of 550356656557 in words is "five hundred fifty billion, three hundred fifty-six million, six hundred fifty-six thousand, five hundred fifty-seven".