55189073 has 2 divisors, whose sum is σ = 55189074. Its totient is φ = 55189072.

The previous prime is 55189067. The next prime is 55189097. The reversal of 55189073 is 37098155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49098049 + 6091024 = 7007^2 + 2468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55189073 is a prime.

It is not a weakly prime, because it can be changed into another prime (55189063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27594536 + 27594537.

It is an arithmetic number, because the mean of its divisors is an integer number (27594537).

Almost surely, 2^55189073 is an apocalyptic number.

It is an amenable number.

55189073 is a deficient number, since it is larger than the sum of its proper divisors (1).

55189073 is an equidigital number, since it uses as much as digits as its factorization.

55189073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 55189073 is about 7428.9348496268. The cubic root of 55189073 is about 380.7305268397.

The spelling of 55189073 in words is "fifty-five million, one hundred eighty-nine thousand, seventy-three".