55493669 has 8 divisors (see below), whose sum is σ = 69187008. Its totient is φ = 43241760.

The previous prime is 55493663. The next prime is 55493681. The reversal of 55493669 is 96639455.

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 55493669 - 2⁴ = 55493653 is a prime.

It is a super-2 number, since 2×55493669² = 6159094598163122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55493663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360272 + ... + 360425.

It is an arithmetic number, because the mean of its divisors is an integer number (8648376).

Almost surely, 2^55493669 is an apocalyptic number.

It is an amenable number.

55493669 is a deficient number, since it is larger than the sum of its proper divisors (13693339).

55493669 is a wasteful number, since it uses less digits than its factorization.

55493669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720715.

The product of its digits is 874800, while the sum is 47.

The square root of 55493669 is about 7449.4072918589. The cubic root of 55493669 is about 381.4296766984.

The spelling of 55493669 in words is "fifty-five million, four hundred ninety-three thousand, six hundred sixty-nine".