55646203 has 2 divisors, whose sum is σ = 55646204. Its totient is φ = 55646202.

The previous prime is 55646197. The next prime is 55646207. The reversal of 55646203 is 30264655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55646203 is a prime.

It is not a weakly prime, because it can be changed into another prime (55646207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27823101 + 27823102.

It is an arithmetic number, because the mean of its divisors is an integer number (27823102).

Almost surely, 2^55646203 is an apocalyptic number.

55646203 is a deficient number, since it is larger than the sum of its proper divisors (1).

55646203 is an equidigital number, since it uses as much as digits as its factorization.

55646203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 55646203 is about 7459.6382620071. The cubic root of 55646203 is about 381.7788322552.

The spelling of 55646203 in words is "fifty-five million, six hundred forty-six thousand, two hundred three".