55532777771 has 2 divisors, whose sum is σ = 55532777772. Its totient is φ = 55532777770.

The previous prime is 55532777767. The next prime is 55532777821. The reversal of 55532777771 is 17777723555.

55532777771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55532777771 - 2² = 55532777767 is a prime.

It is a super-3 number, since 3×55532777771³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (55532776771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766388885 + 27766388886.

It is an arithmetic number, because the mean of its divisors is an integer number (27766388886).

Almost surely, 2^55532777771 is an apocalyptic number.

55532777771 is a deficient number, since it is larger than the sum of its proper divisors (1).

55532777771 is an equidigital number, since it uses as much as digits as its factorization.

55532777771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12605250, while the sum is 56.

The spelling of 55532777771 in words is "fifty-five billion, five hundred thirty-two million, seven hundred seventy-seven thousand, seven hundred seventy-one".