54720889 has 2 divisors, whose sum is σ = 54720890. Its totient is φ = 54720888.

The previous prime is 54720881. The next prime is 54720899. The reversal of 54720889 is 98802745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 1138489 = 7320^2 + 1067^2 .

It is a cyclic number.

It is not a de Polignac number, because 54720889 - 2³ = 54720881 is a prime.

It is not a weakly prime, because it can be changed into another prime (54720881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27360444 + 27360445.

It is an arithmetic number, because the mean of its divisors is an integer number (27360445).

Almost surely, 2^54720889 is an apocalyptic number.

It is an amenable number.

54720889 is a deficient number, since it is larger than the sum of its proper divisors (1).

54720889 is an equidigital number, since it uses as much as digits as its factorization.

54720889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 54720889 is about 7397.3568928368. The cubic root of 54720889 is about 379.6508542785.

The spelling of 54720889 in words is "fifty-four million, seven hundred twenty thousand, eight hundred eighty-nine".