55643005 has 24 divisors (see below), whose sum is σ = 74964960. Its totient is φ = 39320640.

The previous prime is 55642997. The next prime is 55643017. The reversal of 55643005 is 50034655.

It is not a de Polignac number, because 55643005 - 2³ = 55642997 is a prime.

It is a super-2 number, since 2×55643005² = 6192288010860050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74926 + ... + 75664.

It is an arithmetic number, because the mean of its divisors is an integer number (3123540).

Almost surely, 2^55643005 is an apocalyptic number.

55643005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55643005 is a deficient number, since it is larger than the sum of its proper divisors (19321955).

55643005 is a wasteful number, since it uses less digits than its factorization.

55643005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 55643005 is about 7459.4239053696. The cubic root of 55643005 is about 381.7715184762.

The spelling of 55643005 in words is "fifty-five million, six hundred forty-three thousand, five".