54812729 has 2 divisors, whose sum is σ = 54812730. Its totient is φ = 54812728.

The previous prime is 54812687. The next prime is 54812761. The reversal of 54812729 is 92721845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 14807104 = 6325^2 + 3848^2 .

It is a cyclic number.

It is not a de Polignac number, because 54812729 - 2²⁰ = 53764153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54812692 and 54812701.

It is not a weakly prime, because it can be changed into another prime (54812629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27406364 + 27406365.

It is an arithmetic number, because the mean of its divisors is an integer number (27406365).

Almost surely, 2^54812729 is an apocalyptic number.

It is an amenable number.

54812729 is a deficient number, since it is larger than the sum of its proper divisors (1).

54812729 is an equidigital number, since it uses as much as digits as its factorization.

54812729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 54812729 is about 7403.5619130254. The cubic root of 54812729 is about 379.8631293774.

The spelling of 54812729 in words is "fifty-four million, eight hundred twelve thousand, seven hundred twenty-nine".