55642670 has 8 divisors (see below), whose sum is σ = 100156824. Its totient is φ = 22257064.

The previous prime is 55642667. The next prime is 55642703. The reversal of 55642670 is 7624655.

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

It is a super-2 number, since 2×55642670² = 6192213449457800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55642670.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2782124 + ... + 2782143.

It is an arithmetic number, because the mean of its divisors is an integer number (12519603).

Almost surely, 2^55642670 is an apocalyptic number.

55642670 is a deficient number, since it is larger than the sum of its proper divisors (44514154).

55642670 is a wasteful number, since it uses less digits than its factorization.

55642670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564274.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 55642670 is about 7459.4014505187. The cubic root of 55642670 is about 381.7707523199.

The spelling of 55642670 in words is "fifty-five million, six hundred forty-two thousand, six hundred seventy".