55204169 has 2 divisors, whose sum is σ = 55204170. Its totient is φ = 55204168.

The previous prime is 55204159. The next prime is 55204199. The reversal of 55204169 is 96140255.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35844169 + 19360000 = 5987^2 + 4400^2 .

It is a cyclic number.

It is not a de Polignac number, because 55204169 - 2⁴ = 55204153 is a prime.

It is a super-2 number, since 2×55204169² = 6095000549961122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55204109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27602084 + 27602085.

It is an arithmetic number, because the mean of its divisors is an integer number (27602085).

Almost surely, 2^55204169 is an apocalyptic number.

It is an amenable number.

55204169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55204169 is an equidigital number, since it uses as much as digits as its factorization.

55204169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 55204169 is about 7429.9508073742. The cubic root of 55204169 is about 380.7652377209.

The spelling of 55204169 in words is "fifty-five million, two hundred four thousand, one hundred sixty-nine".