55786729 has 2 divisors, whose sum is σ = 55786730. Its totient is φ = 55786728.

The previous prime is 55786727. The next prime is 55786747. The reversal of 55786729 is 92768755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31304025 + 24482704 = 5595^2 + 4948^2 .

It is a cyclic number.

It is not a de Polignac number, because 55786729 - 2¹ = 55786727 is a prime.

It is a super-2 number, since 2×55786729² = 6224318265038882, which contains 22 as substring.

Together with 55786727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55786721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27893364 + 27893365.

It is an arithmetic number, because the mean of its divisors is an integer number (27893365).

Almost surely, 2^55786729 is an apocalyptic number.

It is an amenable number.

55786729 is a deficient number, since it is larger than the sum of its proper divisors (1).

55786729 is an equidigital number, since it uses as much as digits as its factorization.

55786729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 49.

The square root of 55786729 is about 7469.0514123281. The cubic root of 55786729 is about 382.0999368472.

The spelling of 55786729 in words is "fifty-five million, seven hundred eighty-six thousand, seven hundred twenty-nine".