550399115953 has 2 divisors, whose sum is σ = 550399115954. Its totient is φ = 550399115952.

The previous prime is 550399115951. The next prime is 550399115957. The reversal of 550399115953 is 359511993055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521324432784 + 29074683169 = 722028^2 + 170513^2 .

It is a cyclic number.

It is not a de Polignac number, because 550399115953 - 2¹ = 550399115951 is a prime.

Together with 550399115951, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 550399115894 and 550399115903.

It is not a weakly prime, because it can be changed into another prime (550399115951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275199557976 + 275199557977.

It is an arithmetic number, because the mean of its divisors is an integer number (275199557977).

Almost surely, 2^550399115953 is an apocalyptic number.

It is an amenable number.

550399115953 is a deficient number, since it is larger than the sum of its proper divisors (1).

550399115953 is an equidigital number, since it uses as much as digits as its factorization.

550399115953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4100625, while the sum is 55.

The spelling of 550399115953 in words is "five hundred fifty billion, three hundred ninety-nine million, one hundred fifteen thousand, nine hundred fifty-three".