55386570149 has 2 divisors, whose sum is σ = 55386570150. Its totient is φ = 55386570148.

The previous prime is 55386570137. The next prime is 55386570241. The reversal of 55386570149 is 94107568355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33558576100 + 21827994049 = 183190^2 + 147743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55386570149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55386570149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55386570119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27693285074 + 27693285075.

It is an arithmetic number, because the mean of its divisors is an integer number (27693285075).

Almost surely, 2^55386570149 is an apocalyptic number.

It is an amenable number.

55386570149 is a deficient number, since it is larger than the sum of its proper divisors (1).

55386570149 is an equidigital number, since it uses as much as digits as its factorization.

55386570149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 55386570149 in words is "fifty-five billion, three hundred eighty-six million, five hundred seventy thousand, one hundred forty-nine".