551213500489 has 2 divisors, whose sum is σ = 551213500490. Its totient is φ = 551213500488.

The previous prime is 551213500463. The next prime is 551213500501. The reversal of 551213500489 is 984005312155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503698220089 + 47515280400 = 709717^2 + 217980^2 .

It is a cyclic number.

It is not a de Polignac number, because 551213500489 - 2⁷ = 551213500361 is a prime.

It is not a weakly prime, because it can be changed into another prime (551213500289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275606750244 + 275606750245.

It is an arithmetic number, because the mean of its divisors is an integer number (275606750245).

Almost surely, 2^551213500489 is an apocalyptic number.

It is an amenable number.

551213500489 is a deficient number, since it is larger than the sum of its proper divisors (1).

551213500489 is an equidigital number, since it uses as much as digits as its factorization.

551213500489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 551213500489 in words is "five hundred fifty-one billion, two hundred thirteen million, five hundred thousand, four hundred eighty-nine".