551252432777 has 2 divisors, whose sum is σ = 551252432778. Its totient is φ = 551252432776.

The previous prime is 551252432737. The next prime is 551252432827. The reversal of 551252432777 is 777234252155.

It is an a-pointer prime, because the next prime (551252432827) can be obtained adding 551252432777 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543786781561 + 7465651216 = 737419^2 + 86404^2 .

It is a cyclic number.

It is not a de Polignac number, because 551252432777 - 2¹⁶ = 551252367241 is a prime.

It is not a weakly prime, because it can be changed into another prime (551252432707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275626216388 + 275626216389.

It is an arithmetic number, because the mean of its divisors is an integer number (275626216389).

Almost surely, 2^551252432777 is an apocalyptic number.

It is an amenable number.

551252432777 is a deficient number, since it is larger than the sum of its proper divisors (1).

551252432777 is an equidigital number, since it uses as much as digits as its factorization.

551252432777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4116000, while the sum is 50.

The spelling of 551252432777 in words is "five hundred fifty-one billion, two hundred fifty-two million, four hundred thirty-two thousand, seven hundred seventy-seven".