55107817 has 2 divisors, whose sum is σ = 55107818. Its totient is φ = 55107816.

The previous prime is 55107769. The next prime is 55107823. The reversal of 55107817 is 71870155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34821801 + 20286016 = 5901^2 + 4504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55107817 is a prime.

It is not a weakly prime, because it can be changed into another prime (55107887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27553908 + 27553909.

It is an arithmetic number, because the mean of its divisors is an integer number (27553909).

Almost surely, 2^55107817 is an apocalyptic number.

It is an amenable number.

55107817 is a deficient number, since it is larger than the sum of its proper divisors (1).

55107817 is an equidigital number, since it uses as much as digits as its factorization.

55107817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 55107817 is about 7423.4639488584. The cubic root of 55107817 is about 380.5435826173.

The spelling of 55107817 in words is "fifty-five million, one hundred seven thousand, eight hundred seventeen".