55505517737 has 2 divisors, whose sum is σ = 55505517738. Its totient is φ = 55505517736.

The previous prime is 55505517713. The next prime is 55505517757. The reversal of 55505517737 is 73771550555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44630365081 + 10875152656 = 211259^2 + 104284^2 .

It is a cyclic number.

It is not a de Polignac number, because 55505517737 - 2¹⁰ = 55505516713 is a prime.

It is not a weakly prime, because it can be changed into another prime (55505517757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752758868 + 27752758869.

It is an arithmetic number, because the mean of its divisors is an integer number (27752758869).

Almost surely, 2^55505517737 is an apocalyptic number.

It is an amenable number.

55505517737 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505517737 is an equidigital number, since it uses as much as digits as its factorization.

55505517737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3215625, while the sum is 50.

The spelling of 55505517737 in words is "fifty-five billion, five hundred five million, five hundred seventeen thousand, seven hundred thirty-seven".