55066877 has 2 divisors, whose sum is σ = 55066878. Its totient is φ = 55066876.

The previous prime is 55066873. The next prime is 55066903. The reversal of 55066877 is 77866055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54671236 + 395641 = 7394^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 55066877 - 2² = 55066873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55066873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27533438 + 27533439.

It is an arithmetic number, because the mean of its divisors is an integer number (27533439).

Almost surely, 2^55066877 is an apocalyptic number.

It is an amenable number.

55066877 is a deficient number, since it is larger than the sum of its proper divisors (1).

55066877 is an equidigital number, since it uses as much as digits as its factorization.

55066877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 44.

The square root of 55066877 is about 7420.7059637207. The cubic root of 55066877 is about 380.4493230685.

The spelling of 55066877 in words is "fifty-five million, sixty-six thousand, eight hundred seventy-seven".