55869727 has 2 divisors, whose sum is σ = 55869728. Its totient is φ = 55869726.

The previous prime is 55869721. The next prime is 55869731. The reversal of 55869727 is 72796855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55869727 - 2¹⁹ = 55345439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55869721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27934863 + 27934864.

It is an arithmetic number, because the mean of its divisors is an integer number (27934864).

Almost surely, 2^55869727 is an apocalyptic number.

55869727 is a deficient number, since it is larger than the sum of its proper divisors (1).

55869727 is an equidigital number, since it uses as much as digits as its factorization.

55869727 is an evil number, because the sum of its binary digits is even.

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

The square root of 55869727 is about 7474.6054745384. The cubic root of 55869727 is about 382.2893356319.

The spelling of 55869727 in words is "fifty-five million, eight hundred sixty-nine thousand, seven hundred twenty-seven".