55777555511 has 2 divisors, whose sum is σ = 55777555512. Its totient is φ = 55777555510.

The previous prime is 55777555459. The next prime is 55777555549. The reversal of 55777555511 is 11555577755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55777555511 - 2¹⁴ = 55777539127 is a prime.

It is a super-2 number, since 2×55777555511² (a number of 22 digits) contains 22 as substring.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55777555591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27888777755 + 27888777756.

It is an arithmetic number, because the mean of its divisors is an integer number (27888777756).

Almost surely, 2^55777555511 is an apocalyptic number.

55777555511 is a deficient number, since it is larger than the sum of its proper divisors (1).

55777555511 is an equidigital number, since it uses as much as digits as its factorization.

55777555511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5359375, while the sum is 53.

The spelling of 55777555511 in words is "fifty-five billion, seven hundred seventy-seven million, five hundred fifty-five thousand, five hundred eleven".