55297643 has 8 divisors (see below), whose sum is σ = 56744016. Its totient is φ = 53856000.

The previous prime is 55297639. The next prime is 55297661. The reversal of 55297643 is 34679255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55297643 - 2² = 55297639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55297643.

It is not an unprimeable number, because it can be changed into a prime (55297633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45443 + ... + 46643.

It is an arithmetic number, because the mean of its divisors is an integer number (7093002).

Almost surely, 2^55297643 is an apocalyptic number.

55297643 is a deficient number, since it is larger than the sum of its proper divisors (1446373).

55297643 is a wasteful number, since it uses less digits than its factorization.

55297643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365.

The product of its digits is 226800, while the sum is 41.

The square root of 55297643 is about 7436.2384980580. The cubic root of 55297643 is about 380.9800257277.

The spelling of 55297643 in words is "fifty-five million, two hundred ninety-seven thousand, six hundred forty-three".