55965019 has 8 divisors (see below), whose sum is σ = 61392240. Its totient is φ = 50594400.

The previous prime is 55965017. The next prime is 55965029. The reversal of 55965019 is 91056955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55965019 - 2¹ = 55965017 is a prime.

It is a super-2 number, since 2×55965019² = 6264166703340722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55965011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12064 + ... + 16045.

It is an arithmetic number, because the mean of its divisors is an integer number (7674030).

Almost surely, 2^55965019 is an apocalyptic number.

55965019 is a deficient number, since it is larger than the sum of its proper divisors (5427221).

55965019 is a wasteful number, since it uses less digits than its factorization.

55965019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28301.

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

The square root of 55965019 is about 7480.9771420584. The cubic root of 55965019 is about 382.5065577642.

The spelling of 55965019 in words is "fifty-five million, nine hundred sixty-five thousand, nineteen".