55417643 has 4 divisors (see below), whose sum is σ = 56244840. Its totient is φ = 54590448.

The previous prime is 55417639. The next prime is 55417667. The reversal of 55417643 is 34671455.

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

It is a cyclic number.

It is not a de Polignac number, because 55417643 - 2² = 55417639 is a prime.

It is a super-2 number, since 2×55417643² = 6142230311350898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55417613) 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, 413498 + ... + 413631.

It is an arithmetic number, because the mean of its divisors is an integer number (14061210).

Almost surely, 2^55417643 is an apocalyptic number.

55417643 is a deficient number, since it is larger than the sum of its proper divisors (827197).

55417643 is an equidigital number, since it uses as much as digits as its factorization.

55417643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827196.

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

The square root of 55417643 is about 7444.3027208732. The cubic root of 55417643 is about 381.2554116225.

The spelling of 55417643 in words is "fifty-five million, four hundred seventeen thousand, six hundred forty-three".