55660169 has 2 divisors, whose sum is σ = 55660170. Its totient is φ = 55660168.

The previous prime is 55660153. The next prime is 55660201. The reversal of 55660169 is 96106655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43494025 + 12166144 = 6595^2 + 3488^2 .

It is a cyclic number.

It is not a de Polignac number, because 55660169 - 2⁴ = 55660153 is a prime.

It is a super-2 number, since 2×55660169² = 6196108826217122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55660109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27830084 + 27830085.

It is an arithmetic number, because the mean of its divisors is an integer number (27830085).

Almost surely, 2^55660169 is an apocalyptic number.

It is an amenable number.

55660169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55660169 is an equidigital number, since it uses as much as digits as its factorization.

55660169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 55660169 is about 7460.5743076522. The cubic root of 55660169 is about 381.8107690085.

The spelling of 55660169 in words is "fifty-five million, six hundred sixty thousand, one hundred sixty-nine".