55545669 has 24 divisors (see below), whose sum is σ = 83734560. Its totient is φ = 36794736.

The previous prime is 55545661. The next prime is 55545689. The reversal of 55545669 is 96654555.

It is not a de Polignac number, because 55545669 - 2³ = 55545661 is a prime.

It is a super-2 number, since 2×55545669² = 6170642689315122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55545661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42859 + ... + 44135.

It is an arithmetic number, because the mean of its divisors is an integer number (3488940).

Almost surely, 2^55545669 is an apocalyptic number.

It is an amenable number.

55545669 is a deficient number, since it is larger than the sum of its proper divisors (28188891).

55545669 is a wasteful number, since it uses less digits than its factorization.

55545669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471 (or 1459 counting only the distinct ones).

The product of its digits is 810000, while the sum is 45.

The square root of 55545669 is about 7452.8966851822. The cubic root of 55545669 is about 381.5487782797.

The spelling of 55545669 in words is "fifty-five million, five hundred forty-five thousand, six hundred sixty-nine".