55966369 has 4 divisors (see below), whose sum is σ = 56018944. Its totient is φ = 55913796.

The previous prime is 55966307. The next prime is 55966387. The reversal of 55966369 is 96366955.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55966369 - 2⁹ = 55965857 is a prime.

It is a super-2 number, since 2×55966369² = 6264468918088322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55966069) 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, 24657 + ... + 26830.

It is an arithmetic number, because the mean of its divisors is an integer number (14004736).

Almost surely, 2^55966369 is an apocalyptic number.

It is an amenable number.

55966369 is a deficient number, since it is larger than the sum of its proper divisors (52575).

55966369 is a wasteful number, since it uses less digits than its factorization.

55966369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52574.

The product of its digits is 1312200, while the sum is 49.

The square root of 55966369 is about 7481.0673703690. The cubic root of 55966369 is about 382.5096333741.

The spelling of 55966369 in words is "fifty-five million, nine hundred sixty-six thousand, three hundred sixty-nine".