55590169 has 4 divisors (see below), whose sum is σ = 57092644. Its totient is φ = 54087696.

The previous prime is 55590133. The next prime is 55590173. The reversal of 55590169 is 96109555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31775769 + 23814400 = 5637^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 55590169 - 2¹⁵ = 55557401 is a prime.

It is a super-2 number, since 2×55590169² = 6180533778897122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55590869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751182 + ... + 751255.

It is an arithmetic number, because the mean of its divisors is an integer number (14273161).

Almost surely, 2^55590169 is an apocalyptic number.

It is an amenable number.

55590169 is a deficient number, since it is larger than the sum of its proper divisors (1502475).

55590169 is a wasteful number, since it uses less digits than its factorization.

55590169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502474.

The product of its (nonzero) digits is 60750, while the sum is 40.

The square root of 55590169 is about 7455.8815038867. The cubic root of 55590169 is about 381.6506427382.

The spelling of 55590169 in words is "fifty-five million, five hundred ninety thousand, one hundred sixty-nine".