55626646 has 4 divisors (see below), whose sum is σ = 83439972. Its totient is φ = 27813322.

The previous prime is 55626643. The next prime is 55626647. The reversal of 55626646 is 64662655.

55626646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 55626599 and 55626608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55626643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13906660 + ... + 13906663.

It is an arithmetic number, because the mean of its divisors is an integer number (20859993).

Almost surely, 2^55626646 is an apocalyptic number.

55626646 is a deficient number, since it is larger than the sum of its proper divisors (27813326).

55626646 is a wasteful number, since it uses less digits than its factorization.

55626646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27813325.

The product of its digits is 259200, while the sum is 40.

The square root of 55626646 is about 7458.3272923625. The cubic root of 55626646 is about 381.7341012997.

The spelling of 55626646 in words is "fifty-five million, six hundred twenty-six thousand, six hundred forty-six".