55684261 has 2 divisors, whose sum is σ = 55684262. Its totient is φ = 55684260.

The previous prime is 55684249. The next prime is 55684271. The reversal of 55684261 is 16248655.

55684261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54908100 + 776161 = 7410^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 55684261 - 2¹¹ = 55682213 is a prime.

It is a super-2 number, since 2×55684261² = 6201473846232242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55684261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55684271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27842130 + 27842131.

It is an arithmetic number, because the mean of its divisors is an integer number (27842131).

Almost surely, 2^55684261 is an apocalyptic number.

It is an amenable number.

55684261 is a deficient number, since it is larger than the sum of its proper divisors (1).

55684261 is an equidigital number, since it uses as much as digits as its factorization.

55684261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The square root of 55684261 is about 7462.1887539783. The cubic root of 55684261 is about 381.8658488400.

It can be divided in two parts, 55684 and 261, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 55684261 in words is "fifty-five million, six hundred eighty-four thousand, two hundred sixty-one".