55201804477 has 2 divisors, whose sum is σ = 55201804478. Its totient is φ = 55201804476.

The previous prime is 55201804429. The next prime is 55201804481. The reversal of 55201804477 is 77440810255.

55201804477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42638533081 + 12563271396 = 206491^2 + 112086^2 .

It is a cyclic number.

It is not a de Polignac number, because 55201804477 - 2⁷ = 55201804349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55201894477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27600902238 + 27600902239.

It is an arithmetic number, because the mean of its divisors is an integer number (27600902239).

Almost surely, 2^55201804477 is an apocalyptic number.

It is an amenable number.

55201804477 is a deficient number, since it is larger than the sum of its proper divisors (1).

55201804477 is an equidigital number, since it uses as much as digits as its factorization.

55201804477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 313600, while the sum is 43.

The spelling of 55201804477 in words is "fifty-five billion, two hundred one million, eight hundred four thousand, four hundred seventy-seven".