551055578243 has 2 divisors, whose sum is σ = 551055578244. Its totient is φ = 551055578242.

The previous prime is 551055578201. The next prime is 551055578261. The reversal of 551055578243 is 342875550155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551055578243 - 2⁸ = 551055577987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551055578191 and 551055578200.

It is not a weakly prime, because it can be changed into another prime (551055578263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275527789121 + 275527789122.

It is an arithmetic number, because the mean of its divisors is an integer number (275527789122).

Almost surely, 2^551055578243 is an apocalyptic number.

551055578243 is a deficient number, since it is larger than the sum of its proper divisors (1).

551055578243 is an equidigital number, since it uses as much as digits as its factorization.

551055578243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200000, while the sum is 50.

The spelling of 551055578243 in words is "five hundred fifty-one billion, fifty-five million, five hundred seventy-eight thousand, two hundred forty-three".