55305969 has 8 divisors (see below), whose sum is σ = 74236800. Its totient is φ = 36622896.

The previous prime is 55305967. The next prime is 55305983. The reversal of 55305969 is 96950355.

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

It is not a de Polignac number, because 55305969 - 2¹ = 55305967 is a prime.

It is a super-2 number, since 2×55305969² = 6117500414057922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55305969.

It is not an unprimeable number, because it can be changed into a prime (55305967) 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, 61417 + ... + 62310.

It is an arithmetic number, because the mean of its divisors is an integer number (9279600).

Almost surely, 2^55305969 is an apocalyptic number.

It is an amenable number.

55305969 is a deficient number, since it is larger than the sum of its proper divisors (18930831).

55305969 is a wasteful number, since it uses less digits than its factorization.

55305969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123879.

The product of its (nonzero) digits is 182250, while the sum is 42.

The square root of 55305969 is about 7436.7983030334. The cubic root of 55305969 is about 380.9991457742. Note that the first 3 decimals are identical.

The spelling of 55305969 in words is "fifty-five million, three hundred five thousand, nine hundred sixty-nine".