5551552331173 has 2 divisors, whose sum is σ = 5551552331174. Its totient is φ = 5551552331172.

The previous prime is 5551552331137. The next prime is 5551552331177. The reversal of 5551552331173 is 3711332551555.

It is a happy number.

Together with previous prime (5551552331137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5063031013924 + 488521317249 = 2250118^2 + 698943^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551552331173 - 2²⁹ = 5551015460261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5551552331177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775776165586 + 2775776165587.

It is an arithmetic number, because the mean of its divisors is an integer number (2775776165587).

Almost surely, 2^{5551552331173} is an apocalyptic number.

It is an amenable number.

5551552331173 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551552331173 is an equidigital number, since it uses as much as digits as its factorization.

5551552331173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1181250, while the sum is 46.

The spelling of 5551552331173 in words is "five trillion, five hundred fifty-one billion, five hundred fifty-two million, three hundred thirty-one thousand, one hundred seventy-three".