55363729 has 8 divisors (see below), whose sum is σ = 56953640. Its totient is φ = 53818128.

The previous prime is 55363723. The next prime is 55363751. The reversal of 55363729 is 92736355.

It can be written as a sum of positive squares in 4 ways, for example, as 39942400 + 15421329 = 6320^2 + 3927^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55363729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55363691 and 55363700.

It is not an unprimeable number, because it can be changed into a prime (55363723) 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 in 7 ways as a sum of consecutive naturals, for example, 50107 + ... + 51199.

It is an arithmetic number, because the mean of its divisors is an integer number (7119205).

Almost surely, 2^55363729 is an apocalyptic number.

It is an amenable number.

55363729 is a deficient number, since it is larger than the sum of its proper divisors (1589911).

55363729 is an frugal number, since it uses more digits than its factorization.

55363729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1130 counting only the distinct ones).

The product of its digits is 170100, while the sum is 40.

The square root of 55363729 is about 7440.6806812280. The cubic root of 55363729 is about 381.1317345616.

The spelling of 55363729 in words is "fifty-five million, three hundred sixty-three thousand, seven hundred twenty-nine".