54788861 has 2 divisors, whose sum is σ = 54788862. Its totient is φ = 54788860.

The previous prime is 54788849. The next prime is 54788869. The reversal of 54788861 is 16888745.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49266361 + 5522500 = 7019^2 + 2350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54788861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54788869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27394430 + 27394431.

It is an arithmetic number, because the mean of its divisors is an integer number (27394431).

Almost surely, 2^54788861 is an apocalyptic number.

It is an amenable number.

54788861 is a deficient number, since it is larger than the sum of its proper divisors (1).

54788861 is an equidigital number, since it uses as much as digits as its factorization.

54788861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 47.

The square root of 54788861 is about 7401.9498106918. The cubic root of 54788861 is about 379.8079847078.

The spelling of 54788861 in words is "fifty-four million, seven hundred eighty-eight thousand, eight hundred sixty-one".