55645033 has 2 divisors, whose sum is σ = 55645034. Its totient is φ = 55645032.

The previous prime is 55645021. The next prime is 55645061. The reversal of 55645033 is 33054655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49942489 + 5702544 = 7067^2 + 2388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55645033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55644986 and 55645004.

It is not a weakly prime, because it can be changed into another prime (55645013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27822516 + 27822517.

It is an arithmetic number, because the mean of its divisors is an integer number (27822517).

Almost surely, 2^55645033 is an apocalyptic number.

It is an amenable number.

55645033 is a deficient number, since it is larger than the sum of its proper divisors (1).

55645033 is an equidigital number, since it uses as much as digits as its factorization.

55645033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 55645033 is about 7459.5598395616. The cubic root of 55645033 is about 381.7761565149.

Adding to 55645033 its reverse (33054655), we get a palindrome (88699688).

The spelling of 55645033 in words is "fifty-five million, six hundred forty-five thousand, thirty-three".