55579643 has 4 divisors (see below), whose sum is σ = 63519600. Its totient is φ = 47639688.

The previous prime is 55579639. The next prime is 55579651. The reversal of 55579643 is 34697555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34697555 = 5 ⋅6939511.

It is a cyclic number.

It is not a de Polignac number, because 55579643 - 2² = 55579639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55579594 and 55579603.

It is not an unprimeable number, because it can be changed into a prime (55579673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3969968 + ... + 3969981.

It is an arithmetic number, because the mean of its divisors is an integer number (15879900).

Almost surely, 2^55579643 is an apocalyptic number.

55579643 is a deficient number, since it is larger than the sum of its proper divisors (7939957).

55579643 is an equidigital number, since it uses as much as digits as its factorization.

55579643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939956.

The product of its digits is 567000, while the sum is 44.

The square root of 55579643 is about 7455.1755847867. The cubic root of 55579643 is about 381.6265526978.

The spelling of 55579643 in words is "fifty-five million, five hundred seventy-nine thousand, six hundred forty-three".