55457089 has 2 divisors, whose sum is σ = 55457090. Its totient is φ = 55457088.

The previous prime is 55457069. The next prime is 55457093. The reversal of 55457089 is 98075455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55056400 + 400689 = 7420^2 + 633^2 .

It is a cyclic number.

It is not a de Polignac number, because 55457089 - 2¹⁵ = 55424321 is a prime.

It is not a weakly prime, because it can be changed into another prime (55457069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27728544 + 27728545.

It is an arithmetic number, because the mean of its divisors is an integer number (27728545).

Almost surely, 2^55457089 is an apocalyptic number.

It is an amenable number.

55457089 is a deficient number, since it is larger than the sum of its proper divisors (1).

55457089 is an equidigital number, since it uses as much as digits as its factorization.

55457089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 55457089 is about 7446.9516582290. The cubic root of 55457089 is about 381.3458487309.

The spelling of 55457089 in words is "fifty-five million, four hundred fifty-seven thousand, eighty-nine".