54911789 has 2 divisors, whose sum is σ = 54911790. Its totient is φ = 54911788.

The previous prime is 54911783. The next prime is 54911851. The reversal of 54911789 is 98711945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52809289 + 2102500 = 7267^2 + 1450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54911789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54911783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27455894 + 27455895.

It is an arithmetic number, because the mean of its divisors is an integer number (27455895).

Almost surely, 2^54911789 is an apocalyptic number.

It is an amenable number.

54911789 is a deficient number, since it is larger than the sum of its proper divisors (1).

54911789 is an equidigital number, since it uses as much as digits as its factorization.

54911789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 44.

The square root of 54911789 is about 7410.2489161971. The cubic root of 54911789 is about 380.0918268388.

The spelling of 54911789 in words is "fifty-four million, nine hundred eleven thousand, seven hundred eighty-nine".