55802239 has 2 divisors, whose sum is σ = 55802240. Its totient is φ = 55802238.

The previous prime is 55802233. The next prime is 55802267. The reversal of 55802239 is 93220855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55802239 - 2¹⁷ = 55671167 is a prime.

It is a super-3 number, since 3×55802239³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55802233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27901119 + 27901120.

It is an arithmetic number, because the mean of its divisors is an integer number (27901120).

Almost surely, 2^55802239 is an apocalyptic number.

55802239 is a deficient number, since it is larger than the sum of its proper divisors (1).

55802239 is an equidigital number, since it uses as much as digits as its factorization.

55802239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 55802239 is about 7470.0896246297. The cubic root of 55802239 is about 382.1353444372.

The spelling of 55802239 in words is "fifty-five million, eight hundred two thousand, two hundred thirty-nine".