55246777 has 2 divisors, whose sum is σ = 55246778. Its totient is φ = 55246776.

The previous prime is 55246771. The next prime is 55246781. The reversal of 55246777 is 77764255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41229241 + 14017536 = 6421^2 + 3744^2 .

It is a cyclic number.

It is not a de Polignac number, because 55246777 - 2⁷ = 55246649 is a prime.

It is not a weakly prime, because it can be changed into another prime (55246771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27623388 + 27623389.

It is an arithmetic number, because the mean of its divisors is an integer number (27623389).

Almost surely, 2^55246777 is an apocalyptic number.

It is an amenable number.

55246777 is a deficient number, since it is larger than the sum of its proper divisors (1).

55246777 is an equidigital number, since it uses as much as digits as its factorization.

55246777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411600, while the sum is 43.

The square root of 55246777 is about 7432.8175680559. The cubic root of 55246777 is about 380.8631740023.

The spelling of 55246777 in words is "fifty-five million, two hundred forty-six thousand, seven hundred seventy-seven".