55317601 has 2 divisors, whose sum is σ = 55317602. Its totient is φ = 55317600.

The previous prime is 55317511. The next prime is 55317629. The reversal of 55317601 is 10671355.

It is an a-pointer prime, because the next prime (55317629) can be obtained adding 55317601 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39125025 + 16192576 = 6255^2 + 4024^2 .

It is a cyclic number.

It is not a de Polignac number, because 55317601 - 2⁹ = 55317089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55317601.

It is not a weakly prime, because it can be changed into another prime (55317631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27658800 + 27658801.

It is an arithmetic number, because the mean of its divisors is an integer number (27658801).

Almost surely, 2^55317601 is an apocalyptic number.

It is an amenable number.

55317601 is a deficient number, since it is larger than the sum of its proper divisors (1).

55317601 is an equidigital number, since it uses as much as digits as its factorization.

55317601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 55317601 is about 7437.5803188940. The cubic root of 55317601 is about 381.0258545935.

Adding to 55317601 its reverse (10671355), we get a palindrome (65988956).

The spelling of 55317601 in words is "fifty-five million, three hundred seventeen thousand, six hundred one".