54136889 has 2 divisors, whose sum is σ = 54136890. Its totient is φ = 54136888.

The previous prime is 54136879. The next prime is 54136931. The reversal of 54136889 is 98863145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 1138489 = 7280^2 + 1067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54136889 is a prime.

It is not a weakly prime, because it can be changed into another prime (54136879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27068444 + 27068445.

It is an arithmetic number, because the mean of its divisors is an integer number (27068445).

Almost surely, 2^54136889 is an apocalyptic number.

It is an amenable number.

54136889 is a deficient number, since it is larger than the sum of its proper divisors (1).

54136889 is an equidigital number, since it uses as much as digits as its factorization.

54136889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 54136889 is about 7357.7774497466. Note that the first 3 decimals coincide. The cubic root of 54136889 is about 378.2954331203.

The spelling of 54136889 in words is "fifty-four million, one hundred thirty-six thousand, eight hundred eighty-nine".