55885646 has 4 divisors (see below), whose sum is σ = 83828472. Its totient is φ = 27942822.

The previous prime is 55885603. The next prime is 55885723. The reversal of 55885646 is 64658855.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55885646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13971410 + ... + 13971413.

It is an arithmetic number, because the mean of its divisors is an integer number (20957118).

Almost surely, 2^55885646 is an apocalyptic number.

55885646 is a deficient number, since it is larger than the sum of its proper divisors (27942826).

55885646 is a wasteful number, since it uses less digits than its factorization.

55885646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27942825.

The product of its digits is 1152000, while the sum is 47.

The square root of 55885646 is about 7475.6702709523. The cubic root of 55885646 is about 382.3256408390.

The spelling of 55885646 in words is "fifty-five million, eight hundred eighty-five thousand, six hundred forty-six".